Message type: E = Error
Message class:  FI - TR-FM Funds Management 
Message number: 129
Message text: Resetting cleared items not possible: document already posted to P&L
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The SAP error message FI129, "Resetting cleared items not possible: document already posted to P&L," typically occurs when you attempt to reset a cleared item in the Financial Accounting (FI) module, but the associated document has already been posted to the Profit and Loss (P&L) statement. This situation usually arises in the context of clearing accounts, where a transaction has been cleared, and the related financial document has been finalized in the accounting records.
Cause: Document Already Posted to P&L: The primary reason for this error is that the document you are trying to reset has already been posted to the P&L account. Once a document is posted to P&L, it cannot be reversed or reset without specific actions. Clearing Status: The item you are trying to reset is marked as cleared, meaning that it has been settled against another item, and the clearing process has been completed. Document Type Restrictions: Certain document types
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