Message type: E = Error
Message class:  CNV20200 - Messages for development class CNV_20200 
Message number: 004
Message text: ISSR_ACRE-mapping added: value_old=&1, value_new=&2, prio=&3
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The SAP error message CNV20200004 is related to the SAP S/4HANA migration process, specifically during the data conversion phase. This error indicates that there is an issue with the mapping of values in the conversion process, particularly in the context of the ISSR_ACRE (which likely refers to a specific mapping or conversion related to asset accounting or similar areas).
Cause: The error message typically arises due to discrepancies in the mapping of old values to new values during the data migration process. The placeholders value_old=&1, value_new=&2, and prio=&3 indicate that the system is trying to map an old value to a new value, but there is a conflict or an issue with the priority of the mapping. Data Inconsistency: The old value may not have a corresponding new value defined in the mapping table. Priority Issues: The priority assigned to the mapping may not be correctly set, leading to conflicts in how values are
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