Message type: E = Error
Message class:  CNV_21521 - Employee Group Rename 
Message number: 011
Message text: A blank field may be filled with employee group &1
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The SAP error message CNV_21521011 indicates that there is an issue related to a blank field that is expected to be filled with an employee group value. This error typically arises during data migration or conversion processes, particularly when using SAP's tools for data transfer, such as the SAP S/4HANA Migration Cockpit or other data migration tools.
Cause: The error occurs when the system encounters a record where a required field (in this case, the employee group) is blank or not populated. The employee group is a critical piece of information that categorizes employees based on their roles, statuses, or other criteria. If this field is left blank, the system cannot process the record correctly, leading to the error message.
Solution: To resolve this error, you can take the following steps: Identify the Source of the Data: Check the source data that is being migrated or converted. Look for records where the employee group field
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