How To Fix QP323 - Select a smaller class width

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 323

• Message text: Select a smaller class width

What causes this issue?

The class width is too large and is not compatible with the tolerance
range.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Select a different class width.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message QP323 - Select a smaller class width ?

  The SAP error message QP323, which states "Select a smaller class width," typically occurs in the context of quality management and statistical process control within SAP. This error is related to the configuration of control charts or quality inspection plans where the class width defined for a particular characteristic is too large for the data being analyzed.
  Cause:
  
  Class Width Too Large: The class width defined for the characteristic in the control chart or inspection plan is larger than the range of the data being evaluated. This can happen if the data points are closely clustered together, making the defined class width inappropriate.
  Data Range: If the data range is narrow, a larger class width will not allow for meaningful analysis or visualization of the data.
  Configuration Issues: There may be issues with how the control chart or inspection plan is configured, leading to an inappropriate class width setting.
  
  Solution:
  
  Adjust Class Width: Go into the configuration settings for the control chart or inspection plan and reduce the class width to a smaller value that is more appropriate for the data range.
  
  Navigate to the relevant transaction (e.g., QCC1 for control charts) and modify the class width settings.
  
  
  Review Data: Check the data being analyzed to ensure that it is appropriate for the class width you are trying to use. If the data is too narrow, consider whether the class width needs to be adjusted or if the data needs to be re-evaluated.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on setting up control charts and inspection plans correctly.
  Testing: After making adjustments, test the configuration with the data to ensure that the error does not reoccur.
  
  Related Information:
  
  Control Charts: Control charts are used in quality management to monitor the performance of processes over time. They require careful configuration to ensure that the data is represented accurately.
  Quality Inspection Plans: These plans define how quality inspections are to be conducted and may include various characteristics that need to be monitored.
  SAP Quality Management (QM): Understanding the broader context of SAP QM can help in troubleshooting and configuring quality-related processes effectively.
  
  If the issue persists after making adjustments, it may be beneficial to consult with an SAP expert or support team for further assistance.