How To Fix QP638 - Expand class width

QP638 - Overview

• Message type: E = Error

• Message class: QP - Message IDs for function module group QPAA

• Message number: 638

• Message text: Expand class width

Self-Explanatory Message

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message QP638 - Expand class width ?

  The SAP error message QP638, which states "Expand class width," typically occurs in the context of quality management (QM) when dealing with inspection characteristics and their specifications. This error indicates that the class width defined for a characteristic is too narrow to accommodate the data being processed.
  
  Cause:
  The error is usually triggered when:
  
  The defined class width for a characteristic is smaller than the range of values that the characteristic can take.
  The inspection lot or the data being evaluated falls outside the defined limits of the class width.
  There may be a mismatch between the expected data and the defined specifications in the quality management settings.
  
  
  Solution:
  To resolve the QP638 error, you can take the following steps:
  
  
  Review Class Width Settings:
  
  Go to the inspection characteristic settings in the Quality Management module.
  Check the class width defined for the characteristic in question. Ensure that it is wide enough to encompass all possible values that may be recorded.
  
  
  
  Adjust