Orders

Introduction

This page documents the API for delivering orders directly to the POS. Restaurant staff work primarily inside the POS, so accepting orders and managing their lifecycle should be as simple as confirming them. The menu should stay synchronized automatically; staff should not have to maintain it manually.

To enable ordering, complete the following steps in order:

Contact techsupport@qerko.com to enable the ordering feature in Restaurant Admin.
Synchronize the menu.
Implement order handling and lifecycle management.

Qerko must always have the latest menu so customers can order with confidence. Qerko displays the menu in the mobile app and caches it to reduce load on the POS.

Both sides can initiate synchronization:

Qerko calls getMealMenus().
The POS calls updateMenus().

The POS should synchronize whenever the menu changes significantly-for example when an item becomes unavailable, a new item is added, or an existing item is removed.

Qerko refreshes the menu when certain errors occur in orderStart() or orderPrepare(), when the cache expires, or when a customer requests the menu after the current time-to-live elapses. The TTL may change over time as we optimize the frequency of POS requests.

Synchronization flows only from the POS to Qerko; no additional actions are required.

Orders and their lifecycle

Orders are submitted by customers who select items from the menu and confirm them. The customer may be at the table and order another drink (delivery toBill/toTable), schedule a pickup (delivery byCustomer), or request delivery (delivery byOperator).

Delivery byOperator is not yet publicly available. Contact Qerko if you plan to use it.

Orders follow these steps:

Qerko calls orderPrepare(). The POS can adjust the order or offer discounts or upsells. If the customer accepts a change or modifies the order, Qerko calls orderPrepare() again.
Qerko calls orderStart() to submit the order to the POS. From this point, the order content is fixed. The POS either accepts or rejects the order and returns the next status.
If applicable, Qerko calls orderMarkAsPaid() to confirm that payment was captured in advance. Standard Qerko payment processing is passed into this method.
Qerko calls orderClose() when the order lifecycle ends.

The methods orderPrepare(), orderMarkAsPaid(), and orderClose() mirror the payment methods paymentStart, paymentProcessed, and paymentClose.

Each order status reflects the current phase:

OrderWaiting - The order awaits acceptance by restaurant personnel. The POS should prompt staff to accept or reject it.
OrderPreparing - The order is accepted and preparation is in progress.
ReadyForPickUp - Preparation is complete and the order is ready for pickup or delivery (relevant to byCustomer and byOperator).
Completed - The order was handed over to the customer or delivery partner.
Cancelled - The order was cancelled. This status is final; once cancelled, the order remains cancelled and Qerko refunds the customer.

When the status changes, the POS must call updateQerkoOrderStatus(). The POS controls every status transition. Qerko does not change statuses automatically. You can transition between statuses as needed, except that Cancelled cannot transition back. Switching the order to Cancelled also returns money to the customer.

Methods

Method signatures use TypeScript syntax for documentation purposes.

POS Methods

Below is a list of methods which can be called by Qerko. POS must implement these methods.

All of these methods support the error code ERROR_MESSAGE, which shows the returned message to the customer. Use more specific error codes whenever possible.

getMealMenus()

getMealMenus(): MealMenus

Qerko calls this method when it needs to get fresh menu from the POS. POS should respond with up-to-date menu. This method accepts no arguments.

This method returns MealMenus structure which should contain up-to-date menu.

Example

/** Method call request (sent by Qerko) */
{
    "type": "method-call-request",
    "uuid": "call-uuid",
    "method": "getMealMenus",
    "args": []
}
 
/** Method call response (sent by POS) */
{
    "type": "method-call-response",
    "uuid": "call-uuid",
    "calledMethod": "getMealMenus",
    "result": {
        "menus": [{
            "id": "the-menu",
            "currency": "CZK",
            "deliveryTypes": [ "toTable", "toBill" ],
            "categories": [
                {
                    "id": "category-1",
                    "name": "Daily offer",
                    "description": "Meals served from 11 AM to 3 PM.",
                    "orderableTimeSlots": [{
                        "startTime": "11:00:00",
                        "endTime": "15:00:00"
                    }],
                    "items": [
                        {
                            "id": "item-1",
                            "name": "Vegetable soup",
                            "description": "Boiled potatoes and a few more ingredients.",
                            "price": "45",
                            "inStock": true,
                            "modifiers": [],
                            "type": "sale"
                        }, {
                            "id": "item-2",
                            "name": "T-bone steak",
                            "description": "Slice of cow's leg with the bone \"eye\" inside.",
                            "price": "145",
                            "inStock": true,
                            "modifiers": [
                                {
                                    "id": "ab4a054a-5a0a-48fe-947b-f5c23a566bbe",
                                    "minSelected": 1,
                                    "maxSelected": 1,
                                    "maxCount": 1,
                                    "name": "Steak Doneness",
                                    "options": [
                                        {
                                            "id": "b7055208-0827-4eca-8542-bd6d3b99252a",
                                            "menuItemId": "rare",
                                            "defaultSelected": 0,
                                            "addPrice": "0",
                                            "maxCount": 1
                                        },
                                        {
                                            "id": "92d8519f-4cba-4c45-a8fb-989200d50d54",
                                            "menuItemId": "medium",
                                            "defaultSelected": 1,
                                            "addPrice": "0",
                                            "maxCount": 1
                                        }
                                    ]
                                }
                            ],
                            "type": "sale"
                        }
                    ]
                },{
                    "id": "category-2",
                    "name": "Drinks",
                    "description": "Drinks served all the time.",
                    "items": [
                        {
                            "id": "item-3",
                            "name": "Coca-Cola",
                            "description": "We all know it. Ice-cold black sweet drink with bubbles.",
                            "price": "45",
                            "inStock": true,
                            "modifiers": [],
                            "type": "sale"
                        }, {
                            "id": "item-4",
                            "name": "Beer",
                            "description": "Czech classic beer from Pilsen.",
                            "price": "45",
                            "inStock": true,
                            "modifiers": [],
                            "type": "sale"
                        }
                    ]
                },
                {
                    "id": "modifiers",
                    "name": "modifiers",
                    "description": "This catogory is for modifier items and won't be showed in application",
                    "items": [
                        {
                            "id": "medium",
                            "name": "Medium",
                            "description": "This item will be hidden in application",
                            "price": "45",
                            "inStock": true,
                            "modifiers": [],
                            "type": "modifier"
                        },
                        {
                            "id": "rare",
                            "name": "Rare",
                            "description": "This item will be hidden in application",
                            "price": "45",
                            "inStock": true,
                            "modifiers": [],
                            "type": "modifier"
                        }
                    ]
                }
            ],
            "minOrderTime": 0,
            "maxOrderTime": 0
        }],
        "deliveryInfos": [
            {
                "type": "byOperator",
                "paused": false
            },
            {
                "type": "byCustomer",
                "paused": false,
            },
            {
                "type": "toTable",
                "paused": false
            },
            {
                "type": "toBill",
                "paused": false,
            },
        ],
    }
}

orderPrepare()

orderPrepare(args: object): object

Qerko calls this method as a first step of the order. The order is not submitted by the customer yet, but he has reached a summary before the final submission. This is the moment where he might want to apply a discount, accept an upsell offer, etc. POS can pre-validate the order and offer upsell and/or discounts.

This method can be called multiple times for one order.

Offering discounts and upsells is not ready in this moment. Please contact Qerko if you want to use this feature.

Parameter	Required	Type	Description
`orderId`	No	`string` length: 1 - 128	ID of the order which might be assigned in the previous call.
`customerId`	No	`null` / `string` length: 1 - 128	ID of the customer. It is not required because the customer might not be logged in yet.
`orderDelivery`	Yes	OrderDeliveryToTable, OrderDeliveryToBill, OrderDeliveryByCustomer, OrderDeliveryByOperator	Structure with details regarding the order delivery. See the specific type for details. Eg: `{ "deliveryType": "toBill", "billId": "xyz" }`
`items`	Yes	OrderItem[] items: 1 - 256	Ordered items. Eg: `[{ "mealId": "m2c1i1001" }]`

Returns:

Parameter	Required	Type	Description
`orderId`	No	`string` length: 1 - 128	POS can set this to an identifier and Qerko will pass it to next call of this method or to orderStart method.
`orderDelivery`	Yes	OrderDeliveryToTable OrderDeliveryToBill OrderDeliveryByCustomer OrderDeliveryByOperator	Structure with details regarding the order delivery. See the specific type for details. Eg: `{ "deliveryType": "toBill", "billId": "xyz" }`
`allowTip`	No	`boolean`	Can the customer add a tip? Default: `true`
`denyDiscounts`	No	`boolean`	Whether Qerko can apply another discount. Set it to TRUE when there already is an internally applied discount by POS and other discounts are unwanted. This is related to discounts provided by restaurant owners only. Discounts paid by Qerko or third parties (sponsors like breweries) aren’t affected by this property. `FALSE` - Qerko can apply a discount. `TRUE` - Qerko can’t apply a discount. Default: `false`
`calculatedUpcharges`	No	OrderCalculatedUpcharge[]	This param allows POS to use upcharges with Qerko to apply service fees, etc.

TIP: You can just return unchanged input.

Error codes

ITEM_NOT_AVAILABLE
- POS returns this error if the ordered item is unavailable.
- Qerko announces that an item is not available any more and suggests to the custommer to make a new order.
- Qerko tries to update the menu.
INVALID_ITEM_PRICE
- POS returns this error if the ordered item has different price.
- Qerko announces that prices have been changed and suggests to the custommer to make a new order.
- Qerko tries to update the menu.
BILL_LOCKED
- POS returns this error if bill is locked (toBill).
- Qerko announces that there is a waiter operating with the bill right now and suggest to the customer to try the order afterwards.
BILL_NOT_FOUND
- POS returns this error if the bill with this id does not exist (toBill).
- Qerko announces that there is a waiter operating with the bill right now and suggest to the customer to try the order afterwards.
TABLE_NOT_FOUND
- POS returns this error if the table does not exist (toTable).
- Qerko announces that the table doesn’t exist any more and suggests to the custommer to make a new order.
BILL_CLOSED
- POS returns this error if the bill is closed. (toBill).
- Qerko announces that the bill was closed and it is not possible to make an order to this bill.

Example

/** Method call request (sent by Qerko) */
{
    "type": "method-call-request",
    "uuid": "call-uuid",
    "method": "orderPrepare",
    "args": [{
        "orderId": "id-order-124",
        "items": [
            { "mealId": "m2c1i1001" }
        ],
        "orderDelivery": {
            "deliveryType": "toBill",
            "billId": "xyz"
        }
    }]
}

/** Method call response (sent by POS) */
{
    "type": "method-call-response",
    "uuid": "call-uuid",
    "calledMethod": "orderPrepare",
    "result": {
        "orderId": "id-order-124",
        "items": [
            { "mealId": "m2c1i1001" }
        ],
        "orderDelivery": {
            "deliveryType": "toBill",
            "billId": "xyz"
        }
    }
}

orderStart()

orderStart(args: object): object

Qerko calls this method as a second step of an order. The customer has just submitted the order. The order won’t change any more except its status. POS should validate it in this step. POS returns orders and their lifecycle status. Suggested statuses are OrderWaiting, or OrderPreparing.

Parameter	Required	Type	Description
`orderId`	No	`string` length: 1 - 128	ID of the order which might be assigned in the previous orderPrepare().
`customerId`	Yes	`string` length: 1 - 128	ID of the customer.
`calculatedPrice`	Yes	`string` regexp: `^\d{1,6}(?:\.\d{1,3})?$` length: 1 - 10	Calculated price for items. Eg: “129.66”
`orderDelivery`	Yes	`OrderDeliveryToTable` `OrderDeliveryToBill` `OrderDeliveryByCustomer` `OrderDeliveryByOperator`	Structure with details regarding the order delivery. See the specific type for details. Eg: `{ "deliveryType": "toBill", "billId": "xyz" }`
`items`	Yes	`OrderItem[]` items: 1 - 256	Ordered items. Eg: `[{ "mealId": "m2c1i1001" }]`
`orderDateTime`	Yes	`string` length: 1 - 25	Marks the time the order has been placed in the Qerko app in the following format: `'yyyy-mm-ddTHH:MM:SS+HH:MM'` Eg: `"2022-03-21T14:41:50+01:00"`

Returns:

Parameter	Required	Type	Description
`orderId`	Yes	`string` length: 1- 128	Identifier of the created order.
`billId`	No	`string` length: 1- 128	Required for delivery type toTable. It is the identifier of the created bill to which ordered items were added. This ID must match the ID returned in getTableContents
`orderReference`	No	`string` length: 1- 128	Could be used as code for pickup for delivery type byCustomer or byOperator
`status`	Yes	`string`	One of - OrderWaiting - OrderPreparing - ReadyForPickUp - Completed - Cancelled See Orders and their lifecycle section for details.

Error codes

The same as in orderPrepare method.

Example

/** Method call request (sent by Qerko) */
{
    "type": "method-call-request",
    "uuid": "call-uuid",
    "method": "orderStart",
    "args": [{
        "calculatedPrice": "129.34",
        "items": [
            { "mealId": "m2c1i1001" }
        ],
        "orderDelivery": {
            "deliveryType": "toBill",
            "billId": "xyz"
        }
    }]
}
 
/** Method call response (sent by POS) */
{
    "type": "method-call-response",
    "uuid": "call-uuid",
    "calledMethod": "orderStart",
    "result": {
        "orderId": "id-order-124",
        "status": "OrderWaiting"
    }
}

orderMarkAsPaid()

orderMarkAsPaid(args: Payment): Receipt

Qerko calls this method as an optional third step of an order. This method marks the order as paid. It receives the Payment object with a few modifications - orderId is used instead of idBill and the items property contains an array of Order items instead of BillItems. It returns a Receipt. Analogous to the paymentProcessed method. Method is by default called for orders with delivery type byCustomer, but our experience shows that there is strong demand for orders with delivery type toTable that are paid in advance.

The payment always pays for the whole order. Never only part of it.

Any error cancels the order.

If you wish to integrate and test this method, contact techsupport at techsupport@qerko.com.

orderClose()

orderClose(args: object): null

Qerko calls this method is as a final step of an order. Error in this method won’t cancel the order. Analogous to the paymentClose method in payments.

Parameter	Required	Type	Description
`orderId`	Yes	`string` length: 1 - 128	ID of the order which was assigned in paymentStart() method.
`status`	Yes	`string`	One of: `OK` - Success the order was successfuly ordered, `Cancelled` - Something went wrong. The order is cancelled.

Example

/** Method call request (sent by Qerko) */
{
    "type": "method-call-request",
    "uuid": "call-uuid",
    "method": "orderClose",
    "args": [{
        "orderId": "id-order-124",
        "status": "OK"
    }]
}
 
/** Method call response (sent by POS) */
{
    "type": "method-call-response",
    "uuid": "call-uuid",
    "calledMethod": "orderClose",
    "result": null
}

orderStatus()

orderStatus(args: object): object

Qerko calls this method when it need to check the order status on the POS side.

Parameter	Required	Type	Description
`orderId`	Yes	`string` length: 1 - 128	ID of the order status of which should be returned.

Returns:

Parameter	Required	Type	Description
`status`	Yes	string	One of: - `OrderWaiting` - `OrderPreparing` - `ReadyForPickUp` - `Completed` - `Cancelled` See Orders and their lifecycle section for details

Example

/** Method call request (sent by Qerko) */
{
    "type": "method-call-request",
    "uuid": "call-uuid",
    "method": "orderStatus",
    "args": [{
        "orderId": "123"
    }]
}
 
/** Method call response (sent by POS) */
{
    "type": "method-call-response",
    "uuid": "call-uuid",
    "calledMethod": "orderStatus",
    "result": {
        "status": "OrderWaiting"
    }
}

getResource()

getResource(args: object): object | null

Qerko calls this method to get resource from the POS. Eg.: images. This method receives a string idResource which was sent in MenuItem .images array. This method returns a structure, which contains mime-type and the data of the resource. POS can also return null if there is no resource avaialable.

Qerko can download all resources immediately after menu sync or any time after. Qerko wil cache the resource. If you want to update the resource send another idResource.

Parameter	Required	Type	Description
`idResource`	Yes	`string` length: 1 - 128	String `idResource` which was sent in MenuItem`.images` array.

Returns

Parameter	Required	Type	Description
`mime`	Yes	`string`	One of: `image/png` - PNG format. `image/jpeg` - JPEG format.
`data`	Yes	`string` length: 0 - 1000000	Base64 encoded data. Size of the image in B64 encoding is 1MB (1000000 bytes). It means max file size 750kB (750000 bytes) using B64 encoding, without padding and line ends.

Example with resource

/** Method call request (sent by Qerko) */
{
    "type": "method-call-request",
    "uuid": "call-uuid",
    "method": "getResource",
    "args": [{
        "idResource": "C:\\POS\\images\\the-product.jpg::lastMod=1234567890"
    }]
}
 
/** Method call response (sent by POS) */
{
    "type": "method-call-response",
    "uuid": "call-uuid",
    "calledMethod": "getResource",
    "result": {
        "mime": "image/jpeg",
        "data": " ... JPEG data in Base64 ..."
    }
}

Example with no resource available

/** Method call request (sent by Qerko) */
{
    "type": "method-call-request",
    "uuid": "call-uuid",
    "method": "getResource",
    "args": [{
        "idResource": "C:\\POS\\images\\the-product.jpg::lastMod=1234567890"
    }]
}
 
/** Method call response (sent by POS) */
{
    "type": "method-call-response",
    "uuid": "call-uuid",
    "calledMethod": "getResource",
    "result": null
}

Qerko Methods

Below is a list of methods which can be called by POS using websocket or REST endpoint. Qerko implements them.

updateMenus()

updateMenus(menus: MealMenus): null

POS calls this method and passes MealMenus structure to perform synchronization of menu whenever there is an important change in the menu. It accepts the same structure as is returned by getMealMenus() method.

Example

Websocket

/** Method call request (sent by POS) */
{
    "type": "method-call-request",
    "uuid": "call-uuid",
    "method": "updateMenus",
    "args": [{
        "menus": [{
            "id": "the-menu",
            "lang": "cs",
            "currency": "CZK",
            "deliveryTypes": [ "toTable", "toBill" ],
            "categories": [
                {
                    "id": "category-1",
                    "name": "Daily offer",
                    "description": "Meals served from 11 AM to 3 PM.",
                    "orderableTimeSlots": [{
                        "startTime": "11:00:00",
                        "endTime": "15:00:00"
                    }],
                    "items": [
                        {
                            "id": "item-1",
                            "name": "Vegetable soup",
                            "description": "Boiled potatoes and a few more ingredients.",
                            "price": "45",
                            "tagIds": [ "tag-1", "tag-2" ],
                            "inStock": true
                        }, {
                            "id": "item-2",
                            "name": "T-bone steak",
                            "description": "Slice of cow's leg with the bone \"eye\" inside.",
                            "price": "145",
                            "inStock": true
                        }
                    ]
                },{
                    "id": "category-2",
                    "name": "Drinks",
                    "description": "Drinks served all the time.",
                    "items": [
                        {
                            "id": "item-3",
                            "name": "Coca-Cola",
                            "description": "We all know it. Ice-cold black sweet drink with bubbles.",
                            "price": "45",
                            "inStock": true
                        }, {
                            "id": "item-4",
                            "name": "Beer",
                            "description": "Czech classic beer from Pilsen.",
                            "price": "45",
                            "inStock": true
                        }
                    ]
                }
            ],
            "minOrderTime": 0,
            "maxOrderTime": 0
        }],
        "deliveryInfos": [
            {
                "type": "byOperator",
                "paused": false
            },
            {
                "type": "byCustomer",
                "paused": false,
            },
            {
                "type": "toTable",
                "paused": false
            },
            {
                "type": "toBill",
                "paused": false,
            },
        ],
    }]
}
 
/** Method call response (sent by Qerko) */
{
    "type": "method-call-response",
    "uuid": "call-uuid",
    "calledMethod": "updateMenus",
    "result": null
}

Long-polling

Request:

Compiling...

Response:

HTTP/1.1 200 OK
Content-Type: application/json; charset=utf-8

{}

updateQerkoOrderStatus()

updateQerkoOrderStatus(args: object): object

POS calls this method to change status of the order. Beware: setting the order to Cancelled status is irreversible and will return money to the customer.

Parameter	Required	Type	Description
`orderId`	Yes	`string` length: 1 - 128	ID of the order which was assigned in orderStart() method.
`status`	Yes	`string`	One of `OrderWaiting`, `OrderPreparing`, `ReadyForPickUp`, `Completed`, `Cancelled`. See Orders and their lifecycle section for details.
`collectionDateTime`	No	`string`	When will the order be available for pickup Eg: `"2020-01-30T23:42:42Z"`
`preparedOrderMealIds`	No	`string[]`	Relevant for status `ReadyForPickUp`. List of all items that are ready or were ready in the past. If not specified the order is ready for pickup as whole.
`orderReference`	No	`string`	External identifier from POS, shown as order identifier in the mobile app.

Returns:

Parameter	Required	Type	Description
`status`	Yes	`string`	One of `OrderWaiting`, `OrderPreparing`, `ReadyForPickUp`, `Completed`, `Cancelled`. See Orders and their lifecycle section for details.

Example

Websocket

/** Method call request (sent by POS) */
{
    "type": "method-call-request",
    "uuid": "call-uuid",
    "method": "updateQerkoOrderStatus",
    "args": [{
        "collectionDateTime": "2020-01-30T23:42:42Z",
        "orderId": "order-1",
        "status": "ReadyForPickUp",
        "preparedOrderMealIds": [
            "m2c1i1001"
        ]
    }]
}
 
/** Method call response (sent by Qerko) */
{
    "type": "method-call-response",
    "uuid": "call-uuid",
    "calledMethod": "updateQerkoOrderStatus",
    "result": {
        "status": "Completed"
    }
}

Long-polling

Request:

Compiling...

Response:

HTTP/1.1 200 OK
Content-Type: application/json; charset=utf-8

{ "status":"OrderPreparing" }

getQerkoOrderStatus()

getQerkoOrderStatus(args: object): object

POS calls this method to get a status of the order.

Parameter	Required	Type	Description
`orderId`	Yes	`string` length: 1 - 128	ID of the order which was assigned in paymentStart() method.

Returns

Parameter	Required	Type	Description
`status`	Yes	`string`	One of `OrderWaiting`, `OrderPreparing`, `ReadyForPickUp`, `Completed`, `Cancelled`. See Orders and their lifecycle section for details.
`paymentStatus`	No	`string`	State of related payment, if the order was marked as paid. One of `STARTED`, `PROCESSING`, `PAID`, `CANCELLED`, `ERROR`.

Error Codes

NOT_FOUND
- We couldn’t find specified order. For POS it means that the order is cancelled. Something could go so wrong, that the order is just lost.

Example

Websocket

/** Method call request (sent by POS) */
{
    "type": "method-call-request",
    "uuid": "call-uuid",
    "method": "getQerkoOrderStatus",
    "args": [{ "orderId": "order-1" }]
}
 
/** Method call response (sent by Qerko) */
{
    "type": "method-call-response",
    "uuid": "call-uuid",
    "calledMethod": "getQerkoOrderStatus",
    "result": {
        "status": "Completed",
        "paymentStatus": "PAID"
    }
}

Long-polling

Request:

Compiling...

Response:

HTTP/1.1 200 OK
Content-Type: application/json; charset=utf-8

{ "status": "OrderPreparing", "paymentStatus": "PAID" }

Data structures

Follows a list of data structures, which are used for data exchange between POS and Qerko.

DeliveryAddress

This represent delivery address.

Property	Required	Type	Description
`name`	Yes	`string`	John Doe
`phone`	Yes	`string`	+420602341203
`email`	No	`string`	johndoe@gmail.com_
`street`	Yes	`string`	Street address
`postcode`	Yes	`string`	Zip-code
`city`	Yes	`string`	City name
`latitude`	no	`string`	38.8951
`longitude`	no	`string`	-77.0364

OrderItem

This represent order item.

Property	Required	Type	Description
`mealId`	Yes	`string` length: 1 - 128	Corresponds to MenuItem.id.
`modifiers`	No	OrderItemModifier[] items: 0 - 256	Modifiers of the item. Default: `[]` (empty array) Eg: medium-rare
`price`	No	`string` regexp: `^\\d{1,6}(?:\\.\\d{1,3})?$` length: 0 - 10	Price of the item without used modifiers.

OrderItemModifier

This represent modifier in order item.

Property	Required	Type	Description
`id`	Yes	`string` length: 1 - 128	Identifier of the modifier.
`selectedOptions`	Yes	OrderItemModifierOption[]	Selected options of modifiers. Eg: “raw”, “medium”

OrderItemModifierOption

This represent option of modifier in order item.

Property	Required	Type	Description
`id`	Yes	`string` length: 1 - 128	Identifier of the modifier option.
`item`	Yes	OrderItem	OrderItem which is used as modifier

Property	Required	Type	Description
`id`	Yes	`string` length: 1 - 128	Identifier of the category.
`name`	Yes	`string` length: 1 - 128	Human readable name. Should be short. _Eg: `"Drinks"`, `"Soups"`, …
`description`	No	`string` length: 0 - 256	Human readable description. Default: `""` (empty string) Eg: `"These are our delicious homebrewn drinks."`
`items`	No	MenuItem[] items: 0 - 256	List of items in this category. Default: `[]` (empty array)
`orderableTimeSlots`	No	OrderableTimeSlot[] items: 0 - 256	Slot when it is possible to order items from this category. It can only further limit `orderableTimeSlots` from the whole menu. Default: unlimited

MenuItem

This represents one orderable item.

Property	Required	Type	Description
`id`	Yes	`string` length: 1 - 128	Identifier of the item. You will receive this in order as `mealId`.
`name`	Yes	`string` length: 1 - 128	Human readable name. Should be short
`inStock`	Yes	`boolean`	Is item available (= `true`) or sold-out (= `false`)?
`price`	Yes	`string` regexp: `^\d{1,6}(?:\.\d{1,3})?$`	Total price for this items including taxes and packaging.
`type`	No	`string`	Type of MenuItem. Default: `"sale"`. Possible values: `"sale"` - Item can be ordered alone.`"modifier"` - Item is hidden in application and can be ordered only like modifier.
`description`	No	`string` length: 0 - 512	Human readable description. Default: `""` (empty string) Eg: `"The best drink on Earth. Our bartender has spent a lot of effort to prepare this. Get ready for the best time of your life while drinking it."`
`deliveryTypes`	No	`string[]` items: 1 - 4 unique items	List of allowed delivery types. It can only further limit `deliveryTypes` of the whole menu. Possible values: `"toTable"`, `"toBill"`, `"byCustomer"`, `"byOperator"` Notice: `byOperator` is unimplemented. Contact Qerko if you want to use it.
`images`	No	`string[]` length: 1 - 2000 items: 0 - 10	This is list of `resourceId`s. See getResource() method. Qerko will use these IDs to pull the resources when they are needed. Menu can be quite lengthy and we don’t want to overload the connection with hundreds of images :). Default: `[]` (empty array)
`modifiers`	No	MenuItemModifier[] items: 0 - 256	Modifiers that are available for this item Default: `[]` (empty array) Eg: medium-rare

MenuItemModifier

This represent modifier in menu item.

Property	Required	Type	Description
`id`	Yes	`string` length: 1 - 128	Identifier of the modifier.
`minSelected`	Yes	`number` range 0 - 65635	Minimum count of selected unique options
`maxSelected`	No	`number` or `null` range 1 - 65635	Maximum count of selected unique options. Default null. If null then unlimited.
`maxCount`	Yes	`number` range: 1 - 65635	Maximum count of selected non-unique options.
`name`	Yes	`string` length: 1 - 128	Name of modifier. Eg. “Pick steak doneness”
`options`	Yes	MenuItemModifierOption[]	Modifier options. Eg. “medium rare” “raw”

MenuItemModifierOption

This represent option of a modifier in menu item.

Property	Required	Type	Description
`id`	Yes	`string` length: 1 - 128	Identifier of the modifier option.
`menuItemId`	Yes	`string`	ID of MenuItem which will be used like modifier option value.
`addPrice`	Yes	`string`	Price of option, which will be added to final orderItem. This price overrides price of the menuItem linked by menuItemId.
`defaultSelected`	No	`number` or `null`	Number of default selected items. Default null.
`maxCount`	No	`number` or `null`	Maximum number of selections for this option. Default null. If null then unlimited.

MealMenus

This structure contains a collection of menus. There can be multiple menu alternatives because of different currencies, languages and delivery options.

Property	Required	Type	Description
`menus`	Yes	OneMealMenu[] items: 0 - 256	Array of menu alternatives. Up to 5000 items.
`deliveryInfos`	Yes	DeliveryInfo[] items: 0 - 4 unique items	Delivery info effects availability of delivery type for the restaurant. If Delivery info for delivery type is missing it means that delivery type is disabled.

OneMealMenu

This sturcrure represents one menu alternative for concrete language, currency and set of delivery types

Property	Required	Type	Description
`id`	Yes	`string` length: 1 - 128	Identifier of the menu.
`categories`	Yes	Category[] items: 0 - 256	List of categories which further contains menu items.
`currency`	Yes	`string` length: 3	Currency code according to ISO 4217. Eg: `"CZK"`
`deliveryTypes`	Yes	`string[]` items: 1 - 4 unique items	List of allowed delivery types. Possible values: `"toTable"` - The order can be added to the table as a new open bill. `"toBill"` - The order can be added to the existing bill. `"byCustomer"` - The order can be picked up by customer. Used in takeaway windows. `"byOperator"` - The order can be delivered to given address. This is unimplemented. Contact Qerko if you want to use it.
`minOrderTime`	Yes	`number` value: 0 - 2147483647	Minimum order delay in minutes. Minimum: 0 (Setting the delay to zero means the order can be picked up immediately.) Eg: `10` - it means that the customer can express his preference of pickup time to be in 10 minutes or later.
`maxOrderTime`	Yes	`number` value: 0 - 2147483647	Maximum order delay in minutes. Eg: `30` - it means that the customer can express his preference of pickup time to be in 30 minutes or before.
`lang`	Yes	`string` length: 2	ISO 639-1 language code. Default: universal Eg: `"cs"`
`orderableTimeSlots`	No	OrderableTimeSlot[] items: 0 - 256	Slot when it is possible to order items from this menu. Default: unlimited

OrderableTimeSlot

This structure represents a timespan from to which is used to allow orders.

Property	Required	Type	Description
`startTime`	Yes	`string` length: 8	Start time of this slot. Timezone is handled by Qerko configuration, because this isn’t timezoned information. The restaurant usualy opens in 11 AM regardless of summer or winter time. Eg: `"11:00:00"`
`endTime`	Yes	`string` length: 8	Start time of this slot. Timezone is handled by Qerko configuration, because this isn’t timezoned information. The restaurant usualy closes in 11 PM regardless of summer or winter time. Eg: `"23:00:00"`
`startDate`	No	`string` or `null` length: 10	Start date of this slot. Use dates only if there is some sort of speciality in opening hours like New years eve. Or if it is special category like daily menu. Default: `null`, means every day Eg: `"2021-03-02"`
`endDate`	No	`string` or `null` length: 10	End date of this slot. Use dates only if there is some sort of speciality in opening hours like New years eve. Or if it is special category like daily menu. Default: `null`, means every day Eg: `"2021-03-02"`

OrderDeliveryByOperator

This structure holds info about delivery by operator. This means classic delivery as known from Uber Eats, Wolt, Foodora, etc.

Property	Required	Type	Description
`customer`	Yes	DeliveryAddress	Address where to deliver
`deliveryType`	Yes	`string`	Constant value - `"byOperator"`
`collectionNotes`	No	`string` length: 0 - 256	Customers note meant for the operator. Eg: `"Leave the package under the bridge."`
`kitchenNotes`	No	`string` length: 0 - 256	Customers note meant for the cook. Eg: `"Shaken, not stirred."`

OrderDeliveryByCustomer

This structure holds info for customers pickup. The customer will pick up the order in the restaurant.

Property	Required	Type	Description
`name`	Yes	`string` length: 0 - 128	Name of the customer. Eg: `"Miloslav M."`
`collectionDateTime`	Yes	`string`	Date and time when the customer wants to arrive Eg: `"2021-03-02T14:35:00.000+01:00"`
`deliveryType`	Yes	`string`	Constant value - `"byCustomer"`
`orderReference`	No	`string`	Reference number or ID of the order for easier pickup. We strongly recommend to use this property
`collectionNotes`	No	`string` length: 0 - 256	This feature is not yet implemented. Contact Qerko if you want to use it. Note regarding pickup Eg: `"Wrap it into something special"`
`kitchenNotes`	No	`string` length: 0 - 256	This feature is not yet implemented. Contact Qerko if you want to use it. Customers note meant for the cook. Eg: `"Shaken, not stirred."`
`phone`	No	`string`	This feature is not yet implemented. Contact Qerko if you want to use it. Phone to the customer. Eg: `"+420123456789"`

OrderDeliveryToTable

Property	Required	Type	Description
`tableCode`	Yes	`string` length: 1 - 256	Code of the table where the customer sits. Corresponds to `idTable` returned from getTableList
`deliveryType`	Yes	`string`	Constant value - `"toTable"`
`kitchenNotes`	No	`string` length: 0 - 256	This feature is not yet implemented. Contact Qerko if you want to use it. Customers note meant for the cook. Eg: `"Shaken, not stirred."`

OrderDeliveryToBill

Property	Required	Type	Description
`billId`	Yes	`string` length: 1 - 128	Identifier of the customers bill. Corresponds to Bill.id
`deliveryType`	Yes	`string`	Constant value - `"toBill"`
`kitchenNotes`	No	`string` length: 0 - 256	This feature is not yet implemented. Contact Qerko if you want to use it. Customers note meant for the cook. Eg: `"Shaken, not stirred."`
`tableCode`	No	`string` length: 1 - 128	Table identification

OrderCalculatedUpcharge

Property	Type	Required	Description
`id`	string	Yes	Unique identifier of the upcharge from the POS.
`name`	string	Yes
`price`	string	Yes	Total price for the bill upcharge. Price can be zero. Example: 110.00
`additionalData`	any	No	The POS can use this for any additional data. Qerko will not modify it, and you can use it in the order process. You will receive it in Payment
`type`	string	Yes	Options: `POS_PRECALCULATED`

Payment

The difference from the default Payment structure is that there is orderId used instead of idBill and the items property contains an array of Order items instead of BillItems.

Used in orderMarkAsPaid() method.

Receipt

Refers to the same structure as in Receipt data structure. Used in orderMarkAsPaid() method.

DeliveryInfo

This structure contains info about a supported delivery types.

Property	Required	Type	Description
`type`	Yes	`string`	Delivery type identifier. Valid values are: - `toTable` - `toBill` - `byCustomer` - `byOperator`.
`paused`	Yes	`boolean`	Set to true to pause ordering for this delivery type, for example during peak demand or maintenance.

Need help? Contact techsupport@qerko.com for assistance.

Error codes Direct bills

Orders

Introduction

Menu synchronization

Orders and their lifecycle

Methods

POS Methods

getMealMenus()

Example

orderPrepare()

Error codes

Example

orderStart()

Error codes

Example

orderMarkAsPaid()

orderClose()

Example

orderStatus()

Example

getResource()

Example with resource

Example with no resource available

Qerko Methods

updateMenus()

Example

Websocket

Long-polling

updateQerkoOrderStatus()

Example

Websocket

Long-polling

getQerkoOrderStatus()

Error Codes

Example

Websocket

Long-polling

Data structures

DeliveryAddress

OrderItem

OrderItemModifier

OrderItemModifierOption

Category

MenuItem

MenuItemModifier

MenuItemModifierOption

MealMenus

OneMealMenu

OrderableTimeSlot

OrderDeliveryByOperator

OrderDeliveryByCustomer

OrderDeliveryToTable

OrderDeliveryToBill

OrderCalculatedUpcharge

Payment

Receipt

DeliveryInfo