How To Fix QA185 - Sample size could not be calculated

SAP Error Message - Details

• Message type: E = Error

• Message class: QA - QM : Inspection lots

• Message number: 185

• Message text: Sample size could not be calculated

What causes this issue?

The system has attempted to calculate the sample size automatically.
This was not possible as no inspection percentage was entered in the
material master in the inspection setup (quality management view), or
the indicator for a 100% inspection was not set.

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?

Enter the sample size manually, or revise the inspection setup data.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message QA185 - Sample size could not be calculated ?

  The SAP error message QA185, 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 of Error QA185
  
  Missing Sampling Procedure: The sampling procedure may not be defined for the material or inspection type being used.
  Incorrect Configuration: The configuration of the sampling procedure may be incorrect or incomplete, leading to an inability to calculate the sample size.
  Data Inconsistencies: There may be inconsistencies in the master data, such as material master or inspection plan, that prevent the calculation.
  Lot Size Issues: The lot size of the inspection lot may fall outside the defined ranges in the sampling procedure.
  Missing Parameters: Required parameters for the sampling procedure may be missing or not properly set up.
  
  Solutions to Error QA185
  
  
  Check Sampling Procedure:
  
  Ensure that a valid sampling procedure is assigned to the material and inspection type.
  Go to the material master (MM02) and check the quality management view to confirm the sampling procedure.
  
  
  
  Review Sampling Procedure Configuration:
  
  Use transaction code SPRO to access the configuration settings for quality management.
  Navigate to the relevant sections to verify that the sampling procedure is correctly defined, including the sample size calculation rules.
  
  
  
  Inspect Master Data:
  
  Check the material master data for any inconsistencies or missing information.
  Review the inspection plan associated with the material to ensure it is correctly set up.
  
  
  
  Adjust Lot Size:
  
  If the lot size is outside the defined ranges in the sampling procedure, consider adjusting the lot size or modifying the sampling procedure to accommodate the current lot size.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to quality management and sampling procedures for additional guidance.
  
  
  
  Testing:
  
  After making changes, create a new inspection lot to test if the sample size can now be calculated successfully.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  QA01: Create Inspection Lot
  QA02: Change Inspection Lot
  QA03: Display Inspection Lot
  MM02: Change Material Master
  SPRO: Access Customizing
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to sampling procedures and error QA185.
  
  
  Quality Management Configuration: Familiarize yourself with the configuration settings for quality management in SAP, as this will help in troubleshooting similar issues in the future.
  
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant specializing in quality management.