Message type: E = Error
Message class:  CNV_20800 - Message class for CNV_20800 
Message number: 188
Message text: &1 of &2 customer numbers are participating in conversion
Not all the customer numbers that exist in customer master table (KNA1)
participate in the conversion.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
If you wish to rename all the customer numbers present in the system,
specify the remaining customer numbers in the mapping.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_20800188 typically relates to issues encountered during data conversion processes, particularly in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data conversion scenarios. This specific error message indicates that a certain number of customer numbers are involved in the conversion process, but there may be issues preventing the successful completion of that process.
Cause: Data Integrity Issues: The customer numbers may have inconsistencies or errors in the source data that prevent them from being converted properly. Configuration Problems: There may be misconfigurations in the conversion settings or mapping rules that lead to this error. Missing Data: Required fields or data for the customer numbers may be missing or incomplete. Duplicate Entries: There could be duplicate customer numbers in the source data that are causing conflicts during the conversion. Custom Logic: If there are custom enhancements or logic applied to the customer data, they may
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