Message type: E = Error
Message class:  CNV_NCE_BAS - Number conversion engine: messages 
Message number: 400
Message text: ** Error messages for function group CNV_NCEMAP (reserve up to no. 499 **
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.
Unfortunately, there isn't any extra information in this error notice.
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The error message you are encountering, specifically related to the function group CNV_NCEMAP in SAP, is part of the SAP Conversion and Migration tools, particularly for projects involving data migration from legacy systems to SAP S/4HANA or other SAP environments. The error messages in this range (up to number 499) typically indicate issues during the data conversion or mapping process. Possible Causes: Data Mapping Issues: The error may arise from incorrect or incomplete data mapping between the legacy system and the SAP system. Configuration Errors: There may be configuration settings in the migration tools that are not set correctly. Missing Data: Required data fields may be missing in the source data, leading to errors during the conversion process. Incompatibility: The data types or structures in the legacy system may not be compatible with the target SAP system. Authorization Issues: The user executing the migration may not have the necessary authorizations to perform certain actions. Solutions: Review Mapping Configuration:
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