SAP Message USMD1507 - Mod./ent.&1, node ent.&2, hy.attr.fr.ref.&3: Data element &4 is invalid

Diagnosis
The data element must have the same technical properties as the dataelement assigned to the referenced entity type.

System Response
The data model will not be saved.

Procedure
Remove the data element or specify a data element that fulfills thedefined prerequisite. If no data element is specified, the system usesthe data element of the referenced entity type.