# RetailerMessageReference

constructor(messageCategory: String? = null, serviceId: String? = null, deviceId: String? = null, saleId: String? = null, poiId: String? = null)

#### Parameters

messageCategory

refers to RTRMessageCategory

serviceId

identification of a data pair, which processes a transaction

deviceId

DeviceID identifies alone the device data pair. For the Device Dialogue (i.e. device request sent inside a service request/response), DeviceID identifies the device data pair inside the "Service" data pair identified by ServiceID.

saleId

Identification of a Sale System or a Sale Terminal for the Sale to POI protocol

poiId

Identification of a POI System or a POI Terminal for the Sale to POI protocol.