How To Fix COM_DIFF_KEY025 - Key type & is assigned to multiple object types

SAP Error Message - Details

• Message type: E = Error

• Message class: COM_DIFF_KEY - Messages for Differentiation Key

• Message number: 025

• Message text: Key type & is assigned to multiple object types

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message COM_DIFF_KEY025 - Key type & is assigned to multiple object types ?

  The SAP error message COM_DIFF_KEY025 indicates that a key type is assigned to multiple object types, which is not allowed in the system. This typically occurs in the context of configuration or master data management, particularly in the areas of controlling (CO) or materials management (MM).
  Cause:
  The error arises when a key type (such as a cost center, internal order, or any other object type) is incorrectly configured to be associated with more than one object type. In SAP, each key type should uniquely correspond to a single object type to maintain data integrity and avoid confusion in reporting and processing.
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify the Key Type: Determine which key type is causing the issue. The error message will usually specify the key type in question.
  
  
  Check Assignments: Go to the relevant configuration settings in SAP to check the assignments of the key type. This can typically be done in the following areas:
  
  For cost centers: Transaction code OKB9 (for cost element categories).
  For internal orders: Transaction code KOT2 (for order types).
  For other object types, navigate to the relevant configuration area.
  
  
  
  Review Object Types: Look at the object types that are currently assigned to the key type. You may find that the same key type is assigned to multiple object types.
  
  
  Reassign or Remove Duplicates: 
  
  If the key type is indeed assigned to multiple object types, you will need to either reassign it to the correct object type or remove the duplicate assignments.
  Ensure that each key type is only linked to one object type.
  
  
  
  Test Changes: After making the necessary adjustments, test the changes to ensure that the error no longer occurs. You can do this by trying to execute the transaction or process that previously triggered the error.
  
  
  Documentation: Document the changes made for future reference and to inform other team members about the configuration.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes for configuration and master data management in SAP.
  SAP Notes: Check SAP Notes for any specific guidance or patches related to this error message.
  User Roles: Ensure that you have the necessary authorizations to make changes to the configuration settings.
  Testing Environment: If possible, make changes in a development or testing environment before applying them to the production system to avoid disruptions.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.