Message type: E = Error
Message class:  CNV_10020 - Message class for package 10020 
Message number: 157
Message text: &1 &2: TDetObject &3 does not exist
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The SAP error message CNV_10020157 typically indicates that a specific object (in this case, a TDetObject) does not exist in the system. This error is often encountered during data migration or conversion processes, particularly when using SAP's data migration tools or during the execution of a conversion program.
Cause: Missing Object: The object referenced in the error message (TDetObject &3) is not found in the database. This could be due to: The object was not created or was deleted. There is a typo or incorrect reference in the configuration or mapping. The object is part of a package or transport that has not been imported into the system. Incorrect Configuration: The configuration settings for the data migration might be incorrect, leading to references to non-existent objects. Version Mismatch: If you are using a different version of the migration tool or the source system, there might be discrepancies in the expected objects.
Solution: Verify Object Existence: Check if the TDetObject
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