| Table | Table Description | Column# | Alias | Column Description | Data Type | Length | Decimals | Default Value | Constraints |
|---|
| TOPBasic Functions |
| 1 | TTXP | Product codes (external tax interface) | 4 | XPRCD | External product code (external interface) | nvarchar | 10 | 0 | | |
| 2 | TTXPT | Product code description (external interface) | 4 | XPRCD | External product code (external interface) | nvarchar | 10 | 0 | | |
| TOPContract Accounts Receivable and Payable |
| 3 | TE012 | Tax Changes in External System | 4 | XPRCD | External product code (external interface) | nvarchar | 10 | 0 | | |
| TOPTaxes |
| 4 | TTXX | table to determine which tax law is used | 6 | XPRCD | External product code (external interface) | nvarchar | 10 | 0 | | |
