Message type: E = Error
Message class:  CNV_20100 - Messageclass for chart of account conversion 
Message number: 537
Message text: New G/L document splitting is active
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The SAP error message CNV_20100537 indicates that the New General Ledger (New G/L) document splitting is active in your SAP system. This error typically arises during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools.
Cause: The error occurs because the system is trying to process financial documents in a way that is incompatible with the New G/L document splitting functionality. Document splitting is a feature that allows for the automatic splitting of accounting documents into multiple line items based on certain criteria, such as profit centers or segments. If the migration or conversion process does not align with the requirements of document splitting, this error will be triggered.
Solution: To resolve this error, you can consider the following steps: Check Document Splitting Configuration: Ensure that the document splitting configuration is correctly set up in your system. This includes checking the splitting characteristics and the relevant settings
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