Message type: E = Error
Message class: PO - Spooler message
Message number: 177
Message text: Already saved
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The SAP error message PO177 ("Already saved") typically occurs in the context of purchasing documents, such as purchase orders (POs) or purchase requisitions. This error indicates that the document you are trying to save has already been saved in the system, and therefore, the system does not allow you to save it again. Causes: Duplicate Save Attempt: The most common cause is that the user is attempting to save a document that has already been saved in the system. Session Issues: Sometimes, if a user has multiple sessions open or if there are issues with the session, it may lead to confusion about the state of the document. Background Processing: If the document is being processed in the background (e.g., by a workflow), it may not allow further changes until the process is complete. Locking Mechanism: SAP uses a locking mechanism to prevent multiple users from editing the same document simultaneously. If another user has
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