How To Fix FKKID_MSG102 - Entry with key &1 already exists; duplicate key error

SAP Error Message - Details

• Message type: E = Error

• Message class: FKKID_MSG - Messages for FI-CA Loc. Cross-Country

• Message number: 102

• Message text: Entry with key &1 already exists; duplicate key error

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message FKKID_MSG102 - Entry with key &1 already exists; duplicate key error ?

  The SAP error message FKKID_MSG102 indicates that there is a duplicate key entry in the system. This typically occurs in the context of contract accounts or billing documents in the SAP Convergent Charging or Contract Accounts Receivable and Payable (FI-CA) modules. The error suggests that an attempt is being made to create or update an entry that already exists in the database, violating the unique constraint of the key.
  Cause:
  
  Duplicate Data Entry: The most common cause is that the system is trying to create a new entry (like a contract account, billing document, etc.) with a key that already exists in the database.
  Data Migration Issues: If data has been migrated from another system or during a system upgrade, there may be inconsistencies leading to duplicate keys.
  Concurrency Issues: If multiple users or processes are trying to create the same entry simultaneously, it can lead to this error.
  Incorrect Configuration: Sometimes, configuration settings may lead to the generation of duplicate keys.
  
  Solution:
  
  Check Existing Entries: Verify if the entry you are trying to create already exists in the system. You can do this by searching for the key in the relevant transaction or table.
  Modify the Key: If the entry already exists and you need to create a new one, consider modifying the key or using a different identifier.
  Data Cleanup: If the duplicate entries are due to data migration or manual entry errors, you may need to clean up the data to remove duplicates.
  Review Configuration: Check the configuration settings related to the creation of the entries to ensure that they are set up correctly and do not allow duplicates.
  Locking Mechanism: Implement a locking mechanism to prevent concurrent processes from trying to create the same entry at the same time.
  Consult Documentation: Refer to SAP documentation or notes related to the specific module you are working with for any additional guidance or known issues.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may use transaction codes like FBL1N, FBL3N, or FBL5N to view account line items and check for duplicates.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Debugging: If you have access to debugging tools, you can trace the program execution to identify where the duplicate key is being generated.
  Support: If the issue persists, consider reaching out to SAP support for assistance, providing them with detailed information about the error and the context in which it occurs.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.