How To Fix PU121 - Subsequent processing of & & already carried out in previous step

PU121 - Overview

• Message type: E = Error

• Message class: PU - Upgrade and Transport Log Messages

• Message number: 121

• Message text: Subsequent processing of & & already carried out in previous step

What causes this issue?

The objects in the edited change request have already been processed
after the import (partially). This took place in a previous step.
Subsequent processing after the import was carried out successfully for
object &V1& of the type &V2& in a previous step.

System Response

The processing required after the import was not repeated.

Error message extract from SAP system. Copyright SAP SE.

PU121 - Details

• The SAP error message PU121 ("Subsequent processing of & & already carried out in previous step") typically occurs in the context of payroll processing or personnel administration when the system detects that a certain step in the process has already been executed. This can happen in various scenarios, such as when trying to reprocess payroll or when there are inconsistencies in the processing sequence.
  
  Cause:
  
  Duplicate Processing: The error often arises when a payroll run or a specific processing step is attempted again after it has already been completed. This can happen if the user tries to execute a step that is meant to be run only once.
  Incorrect Sequence: If the steps in the payroll process are not followed in the correct order, the system may prevent further processing to avoid inconsistencies.
  Data Locking: Sometimes, if the data is locked due to another process or user, it may lead to this error when