Message type: E = Error
Message class:  HRTNM_MSG - Message class for Training Needs Management 
Message number: 083
Message text: TNM Booking Integration : Customizing Entry is missing in table T77AR.
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The SAP error message HRTNM_MSG083 indicates that there is a missing customizing entry in the table T77AR related to TNM (Time and Attendance Management) Booking Integration. This error typically arises when the system is unable to find the necessary configuration settings for the TNM integration, which can prevent the proper functioning of time management processes.
Cause: The error is usually caused by one of the following reasons: Missing Customizing Entries: The required entries in the T77AR table have not been created or are incomplete. Incorrect Configuration: The configuration settings for TNM integration may not have been set up correctly. Transport Issues: If the configuration was transported from another system, it may not have been transported correctly, leading to missing entries.
Solution: To resolve the error, you can follow these steps: Check Customizing Entries: Go to the transaction code SPRO (SAP Project Reference Object). Navigate to the relevant customizing path for TNM Booking Integration. Verify if the necessary entries in table T77AR
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