How To Fix FMHIE421 - Application data exists for hierarchy ID &1. Import of data not possible

FMHIE421 - Overview

• Message type: E = Error

• Message class: FMHIE - Budget Hierarchies

• Message number: 421

• Message text: Application data exists for hierarchy ID &1. Import of data not possible

Self-Explanatory Message

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FMHIE421 - Details

• The SAP error message FMHIE421 indicates that there is existing application data associated with a specific hierarchy ID, which prevents the import of new data for that hierarchy. This typically occurs in the context of SAP's Financial Management (FM) module, particularly when dealing with hierarchies in budget management or similar areas.
  
  Cause:
  The error arises when you attempt to import or modify a hierarchy that already has associated application data. This could happen in scenarios such as:
  
  Trying to import a new version of a hierarchy that is already in use.
  Attempting to delete or modify a hierarchy that has been referenced in transactions or reports.
  Importing data into a hierarchy that has existing records, which violates the integrity constraints of the system.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Data: 
  
  Use transaction codes like FMHIER or FMHIERARCHY to review the existing hierarchies and their associated data.
  Identify any application data that is