| Table | Table Description | Column# | Alias | Column Description | Data Type | Length | Decimals | Default Value | Constraints |
|---|
| TOPContract Billing |
| 1 | DBERCHZ | Individual Line Items | 31 | INDEXNR | Consecutive number of register relationship | nvarchar | 12 | 0 | | |
| 2 | DBERCHZ2 | Individual line items (device data) | 8 | INDEXNR | Consecutive number of register relationship | nvarchar | 12 | 0 | | |
| 3 | DBERCHZ6 | Document line items (device data, unimportant rows) | 8 | INDEXNR | Consecutive number of register relationship | nvarchar | 12 | 0 | | |
| TOPDevice installation |
| 4 | EASTI | Register Relationships | 2 | INDEXNR | Consecutive number of register relationship | nvarchar | 12 | 0 | | |
| 5 | EASTIH | Header Data for Register Relationships | 2 | INDEXNR | Consecutive number of register relationship | nvarchar | 12 | 0 | | |
| 6 | EZWGEASTI | Predefined Register Relationships | 2 | INDEXNR | Consecutive number of register relationship | nvarchar | 12 | 0 | | |
| 7 | EZWGEASTIH | Header Data for Predefined Register Relationships | 2 | INDEXNR | Consecutive number of register relationship | nvarchar | 12 | 0 | | |
| TOPInvoicing |
| 8 | DBERDZ | DB Table: Individ. Lines - Print Document | 57 | INDEXNR | Consecutive number of register relationship | nvarchar | 12 | 0 | | |
