SAP Message USMD1584 - Model &1, entity type &2: Invalid data element

Diagnosis
The data elements you specify for entity types with internal keyassignments in the data model must fulfill the following technicalprerequisites:

  • Data type: CHAR

  • Minimum length: 6 characters

    • Data element &V2& does not fulfill these prerequisites.

    System Response
    You cannot activate the data model.

    Procedure
    In Customizing activity Edit Data Model,specify a data element that meets these prerequisites.