SAP Message 60503 - Error & during insertion of condition header

Diagnosis
When you activate a rental agreement, the status changes. The systemdeletes the term header with the old status and inserts the term headerwith the new status. The term header with the old status could not bedeleted for the rental agreement selected.

System Response
The activation of the rental agreement was aborted.

Procedure
There is either a database problem or the term header with the oldstatus is not available. Inform your system administrator and givedetails of the rental agreement number which you wanted to activate aswell as the resulting error number.