How To Fix QM645 - Ensure exactly one material only is marked as defective

QM645 - Overview

• Message type: E = Error

• Message class: QM - Messages for quality notifications

• Message number: 645

• Message text: Ensure exactly one material only is marked as defective

Self-Explanatory Message

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message QM645 - Ensure exactly one material only is marked as defective ?

  The SAP error message QM645 ("Ensure exactly one material only is marked as defective") typically occurs in the context of quality management processes, particularly when dealing with inspection lots and defect recording. This error indicates that the system expects only one material to be marked as defective in a given context, but either none or multiple materials have been flagged.
  
  Cause:
  
  Multiple Defective Materials: The user may have inadvertently marked more than one material as defective in the inspection lot.
  No Defective Material Marked: The system may also throw this error if no materials are marked as defective when it expects one.
  
  Configuration Issues: There may be configuration settings in the quality management module that are not aligned with the business process requirements.
  User Input Error: The user may not have followed the correct procedure for marking defects, leading to this error.
  
  
  Solution:
  
  Review Defect Marking: Check the inspection lot and ensure that only one material is