SAP Message 5B191 - The default position taken from T77S0 already exists in Master Data Mgt.

Diagnosis
The 'default position' only displays a symbolic position used to drawattention to the absence of organizational assignment of a person.
The value entered already exists as a position entry of HR Master DataManagement in table 528B.
Therefore, please ensure that the entry made here also represents thedefault position in master data management, and is not already usedelsewhere as a position.