Message type: E = Error
Message class:  /PRA/PN -  
Message number: 027
Message text: Previously open item has posted; requires re-selection
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The SAP error message /PRA/PN027 Previously open item has posted; requires re-selection typically occurs in the context of the SAP system when dealing with financial transactions, particularly in the area of accounts receivable or accounts payable. This error indicates that an open item that was previously selected for processing has been modified or posted by another transaction, making the original selection invalid.
Cause: Concurrent Posting: Another user or process has posted a transaction that affects the open item you are trying to process. Data Consistency: The system requires that the data being processed is consistent and valid. If an open item has been changed, the system cannot proceed with the original selection. Session Timeout: If the session has been open for a long time, the data may have changed in the meantime.
Solution: Re-select the Open Item: The most straightforward solution is to refresh your selection. Go back to the selection screen and re-select the open
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