How To Fix QA421 - Inspection Lot &1: No serial numbers exist at all

SAP Error Message - Details

• Message type: E = Error

• Message class: QA - QM : Inspection lots

• Message number: 421

• Message text: Inspection Lot &1: No serial numbers exist at all

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message QA421 - Inspection Lot &1: No serial numbers exist at all ?

  The SAP error message QA421 indicates that there are no serial numbers associated with the inspection lot you are trying to work with. This error typically occurs in the context of quality management processes, particularly when dealing with inspection lots that require serial number tracking.
  Cause:
  
  No Serial Numbers Assigned: The inspection lot you are trying to process does not have any serial numbers assigned to it. This can happen if the material being inspected is not serialized or if the serial numbers were not properly recorded during the goods movement or production process.
  Incorrect Configuration: The material master may not be set up to require serial numbers, or the serial number profile may not be correctly assigned.
  Inspection Lot Type: The inspection lot type may not be configured to handle serialized materials.
  Data Entry Errors: There may have been an oversight during the data entry process, leading to the absence of serial numbers.
  
  Solution:
  
  
  Check Serial Number Assignment:
  
  Go to the inspection lot in question and check if any serial numbers have been assigned. You can do this by navigating to the inspection lot in the Quality Management module and reviewing the serial number assignment.
  
  
  
  Assign Serial Numbers:
  
  If the inspection lot requires serial numbers, ensure that they are assigned. You can do this through the transaction code IQ02 (Change Serial Number) or IQ01 (Create Serial Number) to assign or create serial numbers for the relevant materials.
  
  
  
  Review Material Master Settings:
  
  Check the material master record for the material in question. Ensure that the serial number profile is correctly assigned and that the material is set up to require serial numbers. You can do this using transaction code MM02 (Change Material) and reviewing the relevant views.
  
  
  
  Inspect Inspection Lot Configuration:
  
  Review the configuration of the inspection lot type to ensure it is set up to handle serialized materials. This may involve checking the settings in the Quality Management module.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or consult with your SAP support team for specific guidance related to your organization's configuration and processes.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  QA03: Display Inspection Lot
  IQ01: Create Serial Number
  IQ02: Change Serial Number
  MM02: Change Material Master
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Quality Management Configuration: Familiarize yourself with the configuration settings in the Quality Management module, particularly those related to inspection lots and serial number management.
  
  By following these steps, you should be able to resolve the QA421 error and ensure that your inspection lot is properly associated with the necessary serial numbers.