Diagnosis
Table &V1& of entity type &V2& has the key column(s) &V3&. Theattributes of the lower-level UI elements of the table columns do nothave &V3& as higher-level entity types and therefore cannot be used inthe table as attributes.
INCLUDE CHANGES_CANNOT_BE_SAVED OBJECT DOKU ID TX

Procedure
Check the definition of table &V1& for entity type &V2&.