SAP Message USMD1049 - Data model &1, entity type &2, relationship &3: Cardinality is invalid

Diagnosis
IF &[SWITCH]FIN_MDM_CORE_SFWS_EHP5& = 'X'.
To use cardinalities in relationships, the following conditions must bemet:

  • For relationships of the type Referencing, only the cardinalities
    • 1:N and 0:N are permitted.
    • For relationships of the type Qualifying, only the cardinality
      • 1:N is permitted.
      • For relationships of the type Leading, only the cardinalities
        • 1:N and 1:1 are permitted. The following also applies tothe cardinality 1:1:
        The to-entity type must have either the storageand use type 1 without an assigned data element, or 4.
        The to-entity type may not appear in any other relationship of the typeLeading or Qualifying as a to-entity type.
        At least one of the conditions has not been fulfilled.
        ELSE.
        For the relationship types Leading and Qualifying, onlythe cardinality 1:N is permitted.
        ENDIF.

        System Response
        You cannot save or activate the data model.

        Procedure
        IF &[SWITCH]FIN_MDM_CORE_SFWS_EHP5& = 'X'.
        Enter a different relationship type or a different cardinality.
        ELSE.
        Enter a different relationship type or the cardinality 1:N.
        ENDIF.