Message type: E = Error
Message class:  CNV20200 - Messages for development class CNV_20200 
Message number: 157
Message text: &1: Function module KEY_ZU_OBJEKT does not produce result for &2 (&3=&4)
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The SAP error message CNV20200157 indicates that the function module KEY_ZU_OBJEKT is not producing a result for a specific object. This error typically arises during data migration or conversion processes, particularly when using SAP's Data Migration tools or during system upgrades.
Cause: Missing Data: The object specified in the error message may not exist in the system or may not have the necessary data associated with it.
Configuration Issues: There may be configuration issues in the system that prevent the function module from retrieving the required data. Incorrect Parameters: The parameters passed to the function module may be incorrect or not aligned with the expected input. Authorization Issues: The user executing the function may not have the necessary authorizations to access the data.
Solution: Check Object Existence: Verify that the object specified in the error message exists in the system. You can do this by checking the relevant tables or using transaction codes that relate to the
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