How To Fix FKKVT129 - Product number &1 does not have a valid format

SAP Error Message - Details

• Message type: E = Error

• Message class: FKKVT - Provider Contract

• Message number: 129

• Message text: Product number &1 does not have a valid format

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FKKVT129 - Product number &1 does not have a valid format ?

  The SAP error message FKKVT129 indicates that the product number specified does not conform to the expected format. This error typically arises in the context of contract accounts receivable and payable (FI-CA) when dealing with product-related transactions.
  Cause:
  
  Invalid Product Number Format: The product number entered does not match the defined format in the system. This could be due to incorrect characters, length, or structure.
  Configuration Issues: The product number format may not be properly configured in the system settings.
  Data Entry Errors: Manual entry errors, such as typos or incorrect product codes, can lead to this error.
  Missing Master Data: The product number may not exist in the master data, or it may have been deleted or archived.
  
  Solution:
  
  Check Product Number: Verify that the product number entered is correct. Ensure that it adheres to the expected format (length, characters, etc.).
  Review Configuration: Check the configuration settings for product numbers in the system. This can be done by navigating to the relevant customizing settings in SPRO (SAP Project Reference Object).
  Master Data Verification: Ensure that the product number exists in the master data. You can check this in the relevant product master data transaction.
  Correct Data Entry: If the error is due to a manual entry mistake, correct the product number and try again.
  Consult Documentation: Refer to SAP documentation or help resources for specific details on the expected format for product numbers in your system.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like FKKOP (for contract accounts) or FBL5N (for customer line items) to investigate further.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  User Exits or BAdIs: If your organization has custom developments, check if there are any user exits or BAdIs that might affect the product number validation.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution.