Business Rules

Business Rules are customizable rules that get executed at different lifecycle events on a sale in Lightspeed Retail (X-Series). The logic in your business rules runs on your own server, and Lightspeed Retail (X-Series) will call out to your server to execute the rules. We call these Remote Rules since the logic does not exist within Lightspeed Retail (X-Series).

To get started you need to register your Remote Rule endpoint in Lightspeed Retail (X-Series) via our API and create a Rule to trigger the Remote Rule.

This feature is only available on Enterprise plans.

Creating a Remote Business Rule

To create a Remote Rule you simply register the endpoint of your Remote Rule with Lightspeed Retail (X-Series):

POST /api/2.0/workflows/remote_rules

In the payload you specify the URL of the Remote Rule on your server:

{
  "url": "https://mycompany.com/vend-business-rule"
}

As a response, you will get a RemoteRule object:

{
  "data": {
    "id": "238757382938758342",
    "url": "https://mycompany.com/vend-busniess-rule",
    "created_at": "2022-02-28T14:22:13Z"
  }
}

For more details see the Create Remote Rule documentation

Creating a Rule

While the Remote Rule is used to register your business rule endpoint in Lightspeed Retail (X-Series), a Rule is used to associate the Remote Rule with a specific lifecycle event in Lightspeed Retail (X-Series).

To create a Rule to trigger your Remote Rule simply create a Rule in Lightspeed Retail (X-Series):

POST /api/2.0/workflows/rules

In the payload to specify the event that should trigger the Remote Rule and the ID of the Remote Rule:

{
  "event_type": "sale.ready_for_payment",
  "remote_rule_id": "238757382938758342"
}

As a response, you will get a Rule object:

{
  "data": {
    "id": "938484920947573",
    "event_type": "sale.ready_for_payment",
    "remote_rule_id": "238757382938758342",
    "created_at": "2022-02-28T14:23:26Z"
  }
}

For more details see the Create Rule documentation

Remote Business Rule API

Now that you have registered your Remote Rule in Lightspeed Retail (X-Series) and created a Rule to trigger it, Lightspeed Retail (X-Series) will call your end-point every time the sale.ready_for_payment event occurs.

A Remote Rule is called via an HTTP JSON POST request at the URL registered.

The Remote Rule is sent information about the event that is happening and can respond with a list of actions to instruct Lightspeed Retail (X-Series) how to proceed.

The payload for an event always has the event_type and retailer. Depending on the event type, the payload will have additional fields describing the context of the event.

As a response to the request, the Remote Rule must return a list of actions for Lightspeed Retail (X-Series) to perform.

Timeout

There is a 2 second window for a response from the event triggering the rule. If a response is not received with valid actions within 2 seconds, a timeout will occur.

Actions

Action Type	Description	Properties
`stop`	Prevent the event from continuing.	`title`: The title of the modal. Default: `””` `message`: The message of the modal. `dismiss_label`: The label of the OK button on the modal. Default: `”OK”`
`confirm`	Ask the user to confirm that they want to proceed.	`title`: The title of the modal. Default: `””` `message`: The message of the modal. `confirm_label`: The label on the button to proceed with the event. Default: `"Continue"` `dismiss_label`: The label on the button to not proceed with the event. Default: `"Cancel"`
`require_custom_fields`	Ask the user to enter values for custom fields.	`title`: The title of the modal. Default: `””` `message`: The message of the modal. `entity`: The type of entity you want to set a custom field on. Must be either `sale` or `line_item`. `entity_id`: The ID of the entity that you want to set the custom field on. This is only required when setting a custom field on a line item. `required_custom_fields`: The custom fields that are required.
`set_custom_field`	Set value for a custom field.	`entity`: The type of entity you want to set a custom field on. Must be either `sale` or `line_item`. `entity_id`: The ID of the entity that you want to set the custom field on. This is only required when setting a custom field on a line item. `custom_field_name`: The name of the custom field that you are setting value of. `custom_field_value`: The value that you want to set on the custom field.
`add_line_item`	Add a line item to the sale.	`product_id`: The ID of the product that you want to add. `product_sku`: The SKU of the product that you want to add. `quantity`: The quantity of the product that you want to add. Default: `"1"` `unit_price`: Use this to override the price of 1 unit of the product. Default: The default unit price of the product. `note`: A note you want to add on the line item. Note: You must specify either the `product_id` or `product_sku`, not both.
`remove_line_item`	Remove a line item from the sale	`line_item_id`: The ID of the line item that you want to remove.
`suggest_products`	Suggest a list of products to the customer.	`title`: The title of the modal. Default: `”Suggested Products”` `message`: The message of the modal. Default: `”Please suggest these products to the customer:”` `suggested_products`: The products that you want to suggest to the customer.
`set_customer`	Set or unset the customer on a sale.	`customer_id`: The ID of the customer you want to set or `null` if you want to unset the customer.

The stop Action

An example response payload with a stop action looks like this:

{
  "actions": [
    {
      "type": "stop",
      "title": "No sale of alcohol to minors",
      "message": "The customer must be at least 21 years old to buy alcohol.",
      "dismiss_label": "OK"
    }
  ]
}

This action would produce a popup on the screen like this:

The confirm Action

An example response payload with a confirm action looks like this:

{
  "actions": [
    {
      "type": "confirm",
      "title": "✋ ID Check",
      "message": "Please confirm than you have checked to ID of the customer.",
      "confirm_label": "Done",
      "dismiss_label": "Cancel"
    }
  ]
}

This action would produce a popup on the screen like this:

The require_custom_fields Action

An example response payload with a require_custom_fields action looks like this:

{
  "actions": [
    {
      "type": "require_custom_fields",
      "title": "We need some information about this return",
      "message": "Please explain why this item is being returned",
      "entity": "line_item",
      "entity_id": "cc0e2f8f-3c14-ac66-11ea-9e2e4fefb804",
      "required_custom_fields": [
        {
          "name": "return-reason",
          "values": [
            {
              "value": "broken",
              "title": "The item is broken"
            },
            {
              "value": "wrong-size",
              "title": "The item does not fit"
            },
            {
              "value": "other",
              "title": "Other (Please describe below)"
            }
          ]
        },
        {
          "name": "return-note"
        }
      ]
    }
  ]
}

This action would produce a popup on the screen like this:

The set_custom_field Action

An example response payload with a set_custom_field action looks like this:

{
  "actions": [
    {
      "type": "set_custom_field",
      "entity": "sale",
      "custom_field_name": "contains-alcohol",
      "custom_field_value": true
    }
  ]
}

The add_line_item Action

An example response payload with a add_line_item action that adds a product by ID, looks like this:

{
  "actions": [
    {
      "type": "add_line_item",
      "product_id": "0242ac12-0002-11e9-e8c4-659494e33153"
    }
  ]
}

Alternatively, you can add a product by SKU:

{
  "actions": [
    {
      "type": "add_line_item",
      "product_sku": "bottle-deposit"
    }
  ]
}

You can optionally set the quantity, unit price, and note as well:

{
  "actions": [
    {
      "type": "add_line_item",
      "product_id": "0242ac12-0002-11e9-e8c4-659494e33153",
      "quantity": "2.4",
      "unit_price": "3.75",
      "note": "Such an awesome line item!"
    }
  ]
}

The remove_line_item Action

An example response payload with a remove_line_item action looks like this:

{
  "actions": [
    {
      "type": "remove_line_item",
      "line_item_id": "0242ac12-0002-11e9-e8c4-659494e33153"
    }
  ]
}

The suggest_products Action

An example response payload with a suggest_products action looks like this:

{
  "actions": [
    {
      "type": "suggest_products",
      "title": "Suggested Products",
      "message": "Please suggest these products to the customer:",
      "suggested_products": [
        {
          "product_sku": "sunglasses"
        },
        {
          "product_id": "0242ac12-0002-11e9-f1df-d3978176d123"
        }
      ]
    }
  ]
}

This action would produce a popup on the screen like this:

The set_customer Action

An example response payload with a set_customer action looks like this:

{
  "actions": [
    {
      "type": "set_customer",
      "customer_id": "0242ac12-0002-11e9-e8c4-659494e33153"
    }
  ]
}

Event types

Different events are triggered by Lightspeed Retail (X-Series) during the lifecycle of a sale.
Currently, we support the following events:

sale.ready_for_payment

The sale.ready_for_payment is triggered by the register when transitioning to the payment screen.

Payload

The payload sent to you when this event occours, has the folowing contents:

Key	Description
`event_type`	The type of event. In this case: `sale.ready_for_payment`
`retailer`	The retailer the event happened on.
`user`	The cashier who triggered the event.
`sale`	The sale that is transitioning to the payment screen.
`customer`	The customer associated with the sale.

Allowed actions

The sale.ready_for_payment event supports these actions:

Action	Description
`stop`	Don't transition to the payment screen.
`confirm`	Ask the cashier for confirmation that we should procceed to the payment screen.
`require_custom_fields`	Ask the cashier for values of custom fields.
`set_custom_field`	Set a custom field.
`add_line_item`	Add a line item.
`remove_line_item`	Remove a line item.
`suggest_products`	Suggest products to the customer.
`set_customer`	Set or unset the customer on the sale.

sale.line_items.added

The sale.line_items.added is triggered by the register when line items are added to a sale.

Payload

The payload sent to you when this event occours has the folowing contents:

Key	Description
`event_type`	The type of event. In this case: `sale.line_items.added`
`retailer`	The retailer the event happened on.
`user`	The cashier who triggered the event.
`sale`	The sale that is had the line items added.
`customer`	The customer associated with the sale.
`line_items`	The line items that were added.

An example request payload for a sale.line_items.added event looks like this:

{
  "event_type": "sale.line_items.added",
  "retailer": {
    "id": "b1ed6158-f019-11e3-a0f5-b8ca3a64f8f4",
    "domain_prefix": "company"
  },
  "user": {
    "id": "08002782-0c90-11e6-e3ed-117ec127b1ca",
    "username": "Admin",
    "email": null,
    "account_type": "admin"
  },
  "sale": {
    "id": "1232ac12-0002-11e9-e8c4-659494dde2eb",
    "status": "SAVED",
    "return_for": "6782ac12-0002-11e9-e8c4-659494dde2eb",
    "outlet_id": "0242ac12-0002-11e9-e8c4-659494dde2eb",
    "register_id": "0242ac12-0002-11e9-e8c4-659494ddca3d",
    "note": "Sale Note",
    "total_price": "69.56521739130434",
    "total_tax": "10.43478260869565",
    "custom_fields": [
      {
        "definition_id": "1247745546911297536",
        "name": "age_verified",
        "boolean_value": true
      }
    ],
    "line_items": [
      {
        "id": "cc0e2f8f-3c14-974a-11ea-67fafc89e3ff",
        "product": {
          "id": "0242ac12-0002-11e9-e8c4-659494e33153",
          "custom_fields": [
            {
              "definition_id":"1249847800380837242",
              "name": "requires_age_verification",
              "boolean_value": true
            }
          ]
        },
        "quantity": "1",
        "note": "Line Item Note",
        "price": "34.78260869565217",
        "price_total": "34.78260869565217",
        "tax_total": "5.217391304347825",
        "custom_fields": [
          {
            "definition_id":"1249847800380837888",
            "name": "serial",
            "string_value": "SN3847sj-34"
          }
        ]
      },
      {
        "id": "cc0e2f8f-3c14-974a-11ea-6896792dfeae",
        "product": {
          "id": "0242ac11-0002-11ea-f7e1-629be820260d",
          "custom_fields": []
        },
        "quantity": "1",
        "note": "Line Item Note",
        "price": "34.78260869565217",
        "price_total": "34.78260869565217",
        "tax_total": "5.217391304347825",
        "custom_fields": []
      }
    ]
  },
  "customer": {
    "id": "0242ac11-0002-11ea-f7e1-629be9455e72",
    "first_name": "Anthony",
    "last_name": "Stark",
    "customer_code": "Tony-N4ZJ",
    "customer_group_id": "28020918-a068-aae4-11e9-cad0d05570c9",
    "email": "[email protected]",
    "phone": "123 456 7890",
    "mobile": "123 456 7890",
    "fax": "123 456 7890",
    "do_not_email": true,
    "note": "Customer Note",
    "date_of_birth": "1963-03-03",
    "year_to_date": "0",
    "balance": "0",
    "loyalty_balance": "0",
    "created_at": "2020-03-10T06:53:56+00:00",
    "enable_loyalty": false,
    "custom_field_1": "Custom data one",
    "custom_field_2": null,
    "custom_field_3": null,
    "custom_field_4": null
  },
  "line_items": [
    {
      "id": "cc0e2f8f-3c14-974a-11ea-6896792dfeae",
      "product": {
        "id": "0242ac11-0002-11ea-f7e1-629be820260d",
        "custom_fields": []
      },
      "quantity": "1",
      "note": "Line Item Note",
      "price": "34.78260869565217",
      "price_total": "34.78260869565217",
      "tax_total": "5.217391304347825",
      "custom_fields": []
    }
  ]
}

Allowed actions

The sale.line_items.added event supports these actions:

Action	Description
`require_custom_fields`	Ask the cashier for values of custom fields.
`set_custom_field`	Set a custom field.
`add_line_item`	Add a line item.
`remove_line_item`	Remove a line item.
`suggest_products`	Suggest products to the customer.
`set_customer`	Set or unset the customer on the sale.

sale.line_items.updated (Currently not supported on mobile app)

Warning: This is triggered for quantity change, price changed and discount percentage change. As these fields dynamically update you will always get three events from this workflow.

The sale.line_items.updated is triggered by the register when line items are updated in a sale. The fields that trigger this are quantity, cost and discount.

Payload

The payload sent to you when this event occours has the following contents:

Key	Description
`event_type`	The type of event. In this case: `sale.line_items.updated`
`retailer`	The retailer the event happened on.
`user`	The cashier who triggered the event.
`sale`	The sale that is had the line items updated.
`customer`	The customer associated with the sale.
`line_items`	The line items that were updated.

Essentially the payload will be identical to that of sale.line_items.added except for the event type.

Allowed actions

The sale.line_items.updated event supports these actions:

Action	Description
`require_custom_fields`	Ask the cashier for values of custom fields.
`set_custom_field`	Set a custom field.
`add_line_item`	Add a line item.
`remove_line_item`	Remove a line item.
`suggest_products`	Suggest products to the customer.
`set_customer`	Set or unset the customer on the sale.

sale.line_items.deleted (Currently not supported on mobile app)

The sale.line_items.deleted is triggered when a line item is deleted from a sale.

Payload

The payload sent to you when this event occurs has the following contents:

Key	Description
`event_type`	The type of event. In this case: `sale.line_items.updated`
`retailer`	The retailer the event happened on.
`user`	The cashier who triggered the event.
`sale`	The sale that is had the line items deleted.
`customer`	The customer associated with the sale.
`removed_line_items`	The line item ids that were removed.

An example request payload for a sale.line_items.deleted event is given below. Note the removed_line_item_ids section, which is an array of deleted ids (normally will only be 1).

{
    "event_type": "sale.line_items.deleted",
    "retailer_id": "00000000-0001-0001-0001-000000000001",
    "retailer": {
        "id": "00000000-0001-0001-0001-000000000001",
        "domain_prefix": "company"
    },
    "sale": {
        "id": "0f6799a5-3a64-b647-11ed-a739c219e537",
        "status": "OPEN",
        "outlet_id": "0242ac12-0002-11e9-e8c4-659494e196e4",
        "register_id": "0242ac12-0002-11e9-e8c4-659494e17cef",
        "line_items": [],
        "note": "",
        "total_price": "0",
        "total_tax": "0",
        "custom_fields": []
    },
    "user": {
        "id": "08002782-0c90-11e6-e3ed-117ec127b1cb",
        "username": "Admin",
        "account_type": "admin"
    },
    "removed_line_item_ids": [
        "0f6799a5-3a64-a36a-11ed-a7f857d968aa"
    ]
}

Allowed actions

The sale.line_items.deleted event supports these actions:

Action	Description
`require_custom_fields`	Ask the cashier for values of custom fields.
`set_custom_field`	Set a custom field.
`add_line_item`	Add a line item.
`remove_line_item`	Remove a line item.
`suggest_products`	Suggest products to the customer.
`set_customer`	Set or unset the customer on the sale.

sale.customer.changed

The sale.customer.changed is triggered by the register when a customer is set or unset on a sale.

Payload

The payload sent to you when this event occours, has the folowing contents:

Key	Description
`event_type`	The type of event. In this case: `sale.customer.changed`
`retailer`	The retailer the event happened on.
`user`	The cashier who triggered the event.
`sale`	The sale that is transitioning to the payment screen.
`customer`	The customer associated with the sale.

Allowed actions

The sale.customer.changed event supports these actions:

Action	Description
`require_custom_fields`	Ask the cashier for values of custom fields.
`set_custom_field`	Set a custom field.
`add_line_item`	Add a line item.
`remove_line_item`	Remove a line item.
`suggest_products`	Suggest products to the customer.

sale.created

The sale.created is triggered when a sale has been created.

Payload

The payload sent to you when this event occours, has the folowing contents:

Key	Description
`event_type`	The type of event. In this case: `sale.created`
`retailer`	The retailer the event happened on.
`user`	The cashier who triggered the event.
`sale`	The sale that is transitioning to the payment screen.
`customer`	The customer associated with the sale.

Allowed actions

The sale.created event supports these actions:

Action	Description
`set_custom_field`	Set a custom field.

sale.updated

The sale.updated is triggered when a sale has been created.

Payload

The payload sent to you when this event occours, has the folowing contents:

Key	Description
`event_type`	The type of event. In this case: `sale.updated`
`retailer`	The retailer the event happened on.
`user`	The cashier who triggered the event.
`sale`	The sale that is transitioning to the payment screen.
`customer`	The customer associated with the sale.

Allowed actions

The sale.updated event supports these actions:

Action	Description
`set_custom_field`	Set a custom field.