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

KA421 - Overview

• 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