Message type: E = Error
Message class:  CNV10310 - Message class for development class CNV_10310 
Message number: 010
Message text: __&1,CONVFUNC=&2 set to READONLY
The related intransparent field does not contain any relevant domains.
The READONLY indicator is set for the table field.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV10310010 typically indicates that a conversion function (CONVFUNC) is set to READONLY, which means that it cannot be modified or updated during the execution of a certain process. This error is often encountered in the context of data migration or conversion processes, particularly when using SAP's Data Migration tools or Conversion tools.
Cause: READONLY Setting: The conversion function you are trying to use is set to READONLY, which means it is not allowed to be changed or updated during the current operation.
Configuration Issues: There may be a misconfiguration in the settings of the conversion function or the data migration process. Locking Mechanism: The function might be locked by another process or user, preventing modifications.
Solution: Check Function Settings: Review the settings of the conversion function to ensure it is not set to READONLY unnecessarily. If it is, consider changing it to allow modifications if appropriate. Review Documentation: Consult the SAP documentation related
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