Message type: E = Error
Message class:  CNV_PE - General messages for posting engine 
Message number: 181
Message text: Parameter &1, scenario &2, REL entry missing
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The SAP error message CNV_PE181 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that a required entry is missing in the relevant configuration or mapping tables, specifically related to the parameters and scenarios being used.
Cause: The error message CNV_PE181 is triggered when: A required parameter (&1) or scenario (&2) is not defined in the relevant configuration tables. There may be missing entries in the mapping or transformation tables that are necessary for the data migration process. The configuration for the specific migration scenario has not been properly set up or is incomplete.
Solution: To resolve the CNV_PE181 error, you can follow these steps: Check Configuration: Verify that the necessary configuration for the migration scenario is complete. This includes checking the relevant customizing settings in the SAP system. Ensure that the parameters specified in the error message are correctly defined in the configuration tables. Review
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