| Table | Table Description | Column# | Alias | Column Description | Data Type | Length | Decimals | Default Value | Constraints |
|---|
| TOPABAP Runtime Environment |
| 1 | D020S | System table D020S (screen sources) | 4 | FNUM | CHAR04 data element for SYST | nvarchar | 4 | 0 | | |
| TOPChange Documents |
| 2 | CDTESTKEY | Test Table for UNICODE-CONVERSION CDPOS-TABKEY | 20 | FNUM | Change documents, 10 digits | nvarchar | 10 | 0 | | |
| TOPRFC |
| 3 | QRFCLOG | Trace Description | 3 | FNUM | Counter within a transaction (LUW) | nvarchar | 8 | 0 | | |
| 4 | QRFCTRACE | Trace Description | 3 | FNUM | Counter within a transaction (LUW) | nvarchar | 8 | 0 | | |
| TOPRouting |
| 5 | TCA71 | Task lists: Verification of function modules | 2 | FNUM | Key for the function module | nvarchar | 10 | 0 | | |
| 6 | TCA72 | Task lists: Verification level of the function modules | 5 | FNUM | Key for the function module | nvarchar | 10 | 0 | | |
