How To Fix QA254 - Maintenance of sample size is only permitted for lots without plan

SAP Error Message - Details

• Message type: E = Error

• Message class: QA - QM : Inspection lots

• Message number: 254

• Message text: Maintenance of sample size is only permitted for lots without plan

What causes this issue?

You can only enter the sample size manually if a plan is not available
as a basis for the quality inspection.

System Response

The input is ignored.

How to fix this error?

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message QA254 - Maintenance of sample size is only permitted for lots without plan ?

  The SAP error message QA254, which states "Maintenance of sample size is only permitted for lots without plan," typically occurs in the Quality Management (QM) module when you attempt to maintain or change the sample size for a quality inspection lot that is associated with a quality inspection plan.
  
  Cause:
  This error arises because the system restricts modifications to the sample size for inspection lots that are linked to a predefined inspection plan. When an inspection lot is created based on an inspection plan, the sample size is determined by the specifications in that plan, and any changes to the sample size must be made at the plan level rather than at the lot level.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Inspection Lot Type: Verify if the inspection lot is created from an inspection plan. If it is, you cannot change the sample size directly in the inspection lot.
  
  
  Modify the