SAP Message 5AT121 - Attribute &1 redefined as subordinate object &2

Diagnosis Attribute &SYST-MSGV1& can only be assigned once within the assignmenthierarchy. However, you have used it several times (in subordinateobject &SYST-MSGV2&). Procedure Make sure that the attribute is only assigned to a single object withinthe assignment hierarchy. Either delete the attribute on the currentobject, or on subordinate object &SYST-MSGV2&.