How To Fix KA421 - No valid master record exists in processing period

SAP Error Message - Details

• Message type: E = Error

• Message class: KA - CO Overhead Costs: Overhead, Accrual Calculation

• Message number: 421

• Message text: No valid master record exists in processing period

What causes this issue?

The system could not locate master records for processing, for the time
frame you entered between period &V1& and &V2&.
This could be caused by the following:
There is no valid master record for the processing time frame.
The validity period is restricted for the existing master records. This
means that there is no valid master record on the posting day in each
period.

System Response

Processing was stopped.

How to fix this error?

Check the validity period of the master records.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KA421 - No valid master record exists in processing period ?

  The SAP error message KA421 ("No valid master record exists in processing period") typically occurs in the context of controlling (CO) when you are trying to post a transaction that requires a valid master record (such as a cost center, internal order, or activity type) for the specified period, but the system cannot find one.
  Cause:
  
  Master Record Not Created: The master record (e.g., cost center, internal order) may not have been created for the specified period.
  Period Lock: The period you are trying to post to may be locked or closed in the system.
  Invalid Master Record: The master record may exist but is not valid for the specified period due to settings or configurations.
  Data Migration Issues: If data was migrated from another system, there may be inconsistencies or missing records.
  
  Solution:
  
  
  Check Master Records: Verify that the relevant master record exists and is valid for the period you are trying to post to. You can do this by navigating to the relevant transaction (e.g., transaction code KS03 for cost centers) and checking the validity dates.
  
  
  Open the Period: If the period is closed, you may need to open it for posting. This can be done in the transaction code OB52, where you can adjust the posting periods for different account types.
  
  
  Create or Update Master Records: If the master record does not exist, create it. If it exists but is not valid for the period, you may need to update its validity dates.
  
  
  Check Configuration: Ensure that the configuration settings for the controlling area and the relevant master records are correct. This includes checking the fiscal year variant and the periods defined.
  
  
  Consult Documentation: Review SAP documentation or consult with your SAP support team for specific configurations related to your organization's setup.
  
  
  Related Information:
  
  Transaction Codes: 
  
  KS03: Display Cost Center
  KO03: Display Internal Order
  OB52: Change Posting Periods
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  User Authorizations: Ensure that the user has the necessary authorizations to view and create master records.
  
  If the issue persists after following these steps, it may be beneficial to engage with your SAP support team or consult SAP community forums for further assistance.