Message type: E = Error
Message class:  KZ - Cost Object Repetitive Mfg / Process Mfg 
Message number: 464
Message text: Errors occurred with & during reversal
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
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The SAP error message KZ464, which states "Errors occurred with & during reversal," typically occurs when there are issues during the reversal of a document in the SAP system, particularly in the context of controlling (CO) or financial accounting (FI) modules. This error can arise due to various reasons, and understanding the cause is essential for resolving it. Causes of KZ464 Error Document Inconsistencies: The document you are trying to reverse may have inconsistencies or errors that prevent the reversal from being processed correctly. Missing or Incorrect Data: Required fields or data may be missing or incorrect in the original document, leading to issues during the reversal process. Posting Period Issues: The posting period for the document may be closed, or the reversal may not be allowed in the current period. Authorization Issues: The user may not have the necessary authorizations to perform the reversal.
Configuration Issues: There may be configuration settings in the system that
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