| ID | string | The unique identifier of the customer’s first transaction. |
| TenantId | int | The unique identifier of the client environment. |
| SourceSystemID | string | The unique identifier of the upstream source system. |
| MasterCustomerID | string | The unique identifier of the de-duplicated master customer. MasterCustomerIDs can change daily and therefore cannot stay consistent or persist across days. |
| ProductCategoryID | string | The unique identifier of the product category. |
| RowCreated | timestamp | The date when the record was ingested in the table. |
| Batch | string | The date when the MasterCustomer table is populated in CDP. This is used for bucketing the ingestion of records in CDP. |