Message type: E = Error
Message class:  CNV_NCE_BAS - Number conversion engine: messages 
Message number: 124
Message text: Cannot retrieve subobject mapping values
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The SAP error message CNV_NCE_BAS124 ("Cannot retrieve subobject mapping values") typically occurs in the context of data migration or conversion processes, particularly when using SAP's tools for data transfer or transformation, such as the SAP S/4HANA Migration Cockpit or other data conversion tools.
Cause:
The error can be caused by several factors, including:
Missing Configuration: The mapping configuration for the subobject may not be set up correctly or is missing entirely.
Data Inconsistencies: There may be inconsistencies or issues with the source data that prevent the system from retrieving the necessary mapping values.
Authorization Issues: The user executing the migration may not have the necessary authorizations to access the required mapping tables or objects.
Technical Issues: There could be technical issues with the underlying database or the SAP system itself, such as connectivity problems or corrupted data.
Solution:
To resolve the CNV_NCE_BAS124 error, you can take the following steps:
Check Mapping Configuration:
Verify that the mapping for the subobject is Get instant SAP help. Sign up for our Free Essentials Plan.
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