| Name | Description | Type | Constraint | MaxLength |
|---|---|---|---|---|
| CheckNumber | This is the Check Number that is used when processing a payment. A minimum of 4 digits is required starting at 1000. A valid check number range is 1000-99999999 before it must be recycled | xs:string | Optional | 8 |
| TableNumber | This is the Table Number that is used when processing a payment. A minimum of 4 alpha numberics is required | xs:string | Optional | 8 |
| SessionId | This is the session Id (GUID) that is associated to a single Pay at Table transaction, the session Id is generated and managed by the merchant system | xs:string | Mandatory | 36 |