Solution : https://service.sap.com/sap/support/notes/202921 (SAP Service marketplace login required)
Key words :
add customer-specific additional fields, abap statement raise error, tab page 'additional fields', required entry field checks, cost center master record, blank additional required fields, cost center master data, required entry fieldprograms, required entry field, required entry fields
Related Notes :
| 715947 | COOMKS02: Various problems |
| 638123 | |
| 379596 | Checks of additional fields in the cost element master |