Message type: E = Error
Message class:  CNV_NCE_BAS - Number conversion engine: messages 
Message number: 421
Message text: Target number range interval could not be determined
The system tried to determine the target number range by using:
Number range object = &V1&
Number range subobject = &V2&
Target number = &V3&
Fiscal year = &V4&
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
No relevant number range could be found based on this information.The target number range cannot be assigned to a number range interval
automatically
Check the value for the fiscal year. If this is correct, the number
range object might not be relevant or might not exist.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_NCE_BAS421 with the description "Target number range interval could not be determined" typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that the system is unable to determine the appropriate number range for the target objects being processed. Causes: Missing Number Range Objects: The target number range object may not be defined in the system, or it may not be properly configured. Incorrect Configuration: The number range configuration for the target object may be incorrect or incomplete. Authorization Issues: The user executing the migration may not have the necessary authorizations to access or modify the number range settings. Data Mapping Issues: There may be issues with the mapping of source data to target structures, leading to ambiguity in determining the number range. Custom Development: If there are custom developments or enhancements, they may interfere with the standard
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