Message type: E = Error
Message class:  HRPAYBE_TAX - Tax 
Message number: 029
Message text: A correction for FTN &1 is currently processed ( B2A ID &2 )
You are trying to send a selected update for a declaration specified by
a File Transmission Number (FTN).
However, there is another correction for the same FTN processed by the
tax office.
Declaration is not generated
You have to wait until the other corrective declaration has been
accepted ( or rejected ) by the tax office. The result of the
notification message has to be uploaded to the corresponding B2A.
process.
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 HRPAYBE_TAX029 indicates that there is a correction process currently being executed for a specific FTN (File Transfer Number) associated with a B2A (Business to Administration) ID. This error typically arises in the context of payroll processing, particularly in Belgium, where tax corrections or adjustments are being made.
Cause: Concurrent Processing: The error usually occurs when there is an attempt to process a payroll correction or adjustment while another correction for the same FTN is already in progress. This can happen if multiple users or processes are trying to execute payroll corrections simultaneously. System Locking: The system may have a locking mechanism that prevents multiple processes from modifying the same data at the same time, leading to this error message.
Solution: Wait for Completion: The simplest solution is to wait until the current correction process (identified by B2A ID &2) is completed. Once it is finished, you can retry the operation that
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