Message type: E = Error
Message class:  RU - Messages for order completion confirmation 
Message number: 128
Message text: Last selected confirmation reached
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The SAP error message RU128 "Last selected confirmation reached" typically occurs in the context of production order confirmations or goods movements in SAP. This message indicates that the system has reached the last confirmation for a particular operation or process, and no further confirmations can be processed for that specific operation.
Cause: Confirmation Limit Reached: The error usually arises when the system has already processed the maximum number of confirmations allowed for a specific operation or production order. Incorrect Sequence: It may also occur if the user is trying to confirm an operation that has already been completed or confirmed. Configuration Settings: There might be specific settings in the configuration of the production order or confirmation process that limit the number of confirmations.
Solution: Check Confirmation Status: Verify the status of the production order or operation in question. Ensure that you are not trying to confirm an operation that has already been completed. Review Confirmation History: Look
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