How To Fix KA406 - Entry & already exists as a base

KA406 - Overview

• Message type: E = Error

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

• Message number: 406

• Message text: Entry & already exists as a base

What causes this issue?

Entry & is already defined as a base and is therefore invalid.

How to fix this error?

Select a valid name.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KA406 - Entry & already exists as a base ?

  The SAP error message KA406 ("Entry & already exists as a base") typically occurs in the context of cost accounting, particularly when dealing with cost center planning or activity type planning. This error indicates that there is an attempt to create or modify a planning entry that already exists in the system, which is not allowed.
  
  Cause:
  
  Duplicate Entries: The most common cause of this error is that there is already an existing entry in the planning table for the same cost center, activity type, or other relevant fields that you are trying to create or modify.
  Incorrect Data Entry: Sometimes, the error can arise from incorrect data entry or configuration that leads to a conflict with existing records.
  Data Migration Issues: If data has been migrated from another system or if there have been recent changes in the configuration, it may lead to duplicate entries.
  
  
  Solution:
  
  
  Check Existing Entries: 
  
  Use transaction codes like KP06 (Cost