How To Fix FKBPIDT018 - An assignment with ID type &1 already exists in client &2

SAP Error Message - Details

• Message type: E = Error

• Message class: FKBPIDT - Additional Partner Numbers

• Message number: 018

• Message text: An assignment with ID type &1 already exists in client &2

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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 FKBPIDT018 - An assignment with ID type &1 already exists in client &2 ?

  The SAP error message FKBPIDT018 indicates that there is an attempt to create an assignment with an ID type that already exists in the specified client. This typically occurs in the context of financial accounting or master data management, where unique identifiers are required for certain records.
  Cause:
  The error is triggered when:
  
  You are trying to create a new assignment (e.g., a vendor, customer, or other master data) using an ID type that is already in use within the same client.
  There may be a duplicate entry in the database for the ID type you are trying to create.
  The system enforces uniqueness for certain ID types to maintain data integrity.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Assignments:
  
  Use transaction codes like SE16 or SE11 to check the relevant database tables (e.g., LFB1 for vendor master data, KNA1 for customer master data) to see if an entry with the same ID type already exists.
  
  
  
  Modify or Delete Duplicate Entries:
  
  If you find a duplicate entry that is not needed, consider deleting or modifying it to free up the ID type for your new assignment.
  
  
  
  Use a Different ID Type:
  
  If the ID type you are trying to use is already taken and cannot be deleted or modified, consider using a different ID type that is not in use.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to the specific ID type you are working with to understand the constraints and requirements.
  
  
  
  Check Configuration Settings:
  
  If you have access to configuration settings, ensure that the settings for ID types are correctly defined and that there are no conflicts.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support for assistance, especially if this is a recurring issue or if it affects multiple users.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE16 (Data Browser), SE11 (Data Dictionary), and the specific transaction for the master data you are working with (e.g., XK01 for vendor creation).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Authorization: Ensure that you have the necessary authorizations to create or modify the entries in the system.
  
  By following these steps, you should be able to identify the cause of the FKBPIDT018 error and implement a suitable solution.