How To Fix QA275 - Sample size could not be calculated

SAP Error Message - Details

• Message type: E = Error

• Message class: QA - QM : Inspection lots

• Message number: 275

• Message text: Sample size could not be calculated

What causes this issue?

The scope of the sample could not be calculated because no inspection
specifications (neither a plan nor a specification) have been assigned
to the inspection lot yet.

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?

First assign inspection specifications to the lot.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message QA275 - Sample size could not be calculated ?

  The SAP error message QA275, which states "Sample size could not be calculated," typically occurs in the context of quality management processes, particularly when dealing with inspection lots and sampling procedures. This error indicates that the system is unable to determine the appropriate sample size for an inspection lot based on the defined sampling procedure.
  Causes:
  
  Missing Sampling Procedure: The sampling procedure may not be defined or assigned to the material or inspection type.
  Incorrect Configuration: The configuration of the sampling procedure may be incorrect or incomplete, leading to an inability to calculate the sample size.
  Data Issues: There may be missing or incorrect data in the material master, inspection plan, or quality management settings.
  Lot Size Issues: The inspection lot size may fall outside the defined ranges for the sampling procedure.
  Versioning Issues: If there are multiple versions of the sampling procedure, the system may not be able to determine which one to use.
  
  Solutions:
  
  Check Sampling Procedure: Ensure that a valid sampling procedure is assigned to the material and inspection type. You can do this by navigating to the material master or the inspection plan.
  Review Configuration: Verify the configuration of the sampling procedure in the Quality Management settings. Ensure that all necessary parameters are correctly set up.
  Inspect Data: Check the material master and inspection plan for any missing or incorrect data that could affect the sample size calculation.
  Adjust Lot Size: If the inspection lot size is outside the defined ranges, consider adjusting the lot size or modifying the sampling procedure to accommodate it.
  Consult Documentation: Review SAP documentation or help resources for specific details on the sampling procedure and its configuration.
  Test with Different Data: If possible, test the sampling procedure with different materials or lot sizes to see if the issue persists.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like QA01 (Create Inspection Lot), QA02 (Change Inspection Lot), and QAP1 (Create Sampling Procedure) to manage inspection lots and sampling procedures.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or bugs related to this error message.
  User Exits and BAdIs: If custom logic is implemented, review any user exits or BAdIs that may affect the sampling procedure.
  
  If the issue persists after checking these areas, it may be beneficial to consult with your SAP support team or a functional consultant specializing in Quality Management.