SAP Message UD704 - Explicit attributes and attribute types of DDIC attributes were deleted

Diagnosis
There are 3 different attribute categories.
- inherited attributes
- attributes transferred from the ABAP/4 Dictionary
- explicit attributes
Inherited attributes and attributes transferred from the ABAP/4Dictionary cannot be deleted.
The attribute types are simply deleted for attributes which aretransferred from the ABAP/4 Dictionary.

Procedure
If you want to delete the attributes which were transferred from theABAP/4 Dictionary, you can delete the assignment of the table or viewto the entity types.