Diagnosis
You tried to create a BP relationship/role definition with a validityperiod that overlaps another validity period assigned to this BPrelationship/role definition. An adjustment to the validity periodsthat already exist is necessary. The adjustment is not made duringsummary entry.

System Response
Error message
It is not possible to create with this validity period using summaryentry.

Procedure
Use change mode to create the BP relationship/role definition.