Message type: E = Error
Message class:  /PM0/ABJ_MSG -  
Message number: 042
Message text: Optional parameter must be filled for key assignment of a policy
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The SAP error message /PM0/ABJ_MSG042 Optional parameter must be filled for key assignment of a policy typically occurs in the context of policy management within the SAP system, particularly when dealing with key assignments for policies in the SAP Portfolio Management (PM) module.
Cause: This error indicates that there is a missing optional parameter that is required for the key assignment of a policy. In SAP, certain fields may be marked as optional, but in specific contexts or configurations, they may become mandatory. This can happen due to:
Configuration Issues: The system configuration may require certain optional fields to be filled in for the key assignment to be valid. Data Entry Errors: Users may have missed filling in required fields when creating or modifying a policy. Custom Enhancements: Custom developments or enhancements in the SAP system may have changed the behavior of the key assignment process, making previously optional fields mandatory.
Solution: To resolve this error, you
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