Natural System Error Messages 2650-2699

NAT2687: Source field for sub-/super-descriptor not in DDM.

Text
Source field for sub-/super-descriptor not in DDM.
Expl.
The field specified in the sub-/super-descriptor definition is not
defined as field in the DDM. The sub-/super-descriptor is only
allowed to refer fields defined in the DDM.
Actn.
Check source field names of the sub-/super-descriptor.