How To Fix FKKINV502 - Internal: Error during entry of custom selections

SAP Error Message - Details

• Message type: E = Error

• Message class: FKKINV - Invoicing in Contract Accounts Receivable and Payable

• Message number: 502

• Message text: Internal: Error during entry of custom selections

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 FKKINV502 - Internal: Error during entry of custom selections ?

  The SAP error message FKKINV502 ("Internal: Error during entry of custom selections") typically occurs in the context of the SAP Convergent Charging or SAP Contract Accounts Receivable and Payable (FI-CA) modules. This error indicates that there was an issue when trying to process custom selections during an invoice or billing operation.
  Possible Causes:
  
  Custom Code Issues: If there are custom enhancements or modifications in the system, they may not be functioning correctly, leading to this error.
  Data Inconsistencies: There may be inconsistencies or missing data in the database that the system is trying to access.
  Configuration Errors: Incorrect configuration settings in the FI-CA module or related components can lead to this error.
  Authorization Issues: The user may not have the necessary authorizations to perform the action that triggered the error.
  System Bugs: There may be bugs in the SAP version being used that could lead to this error.
  
  Solutions:
  
  Check Custom Code: Review any custom code or enhancements that may be affecting the invoice processing. Debugging the code can help identify the root cause.
  Data Validation: Ensure that all necessary data is present and consistent. Check for missing or incorrect entries in the relevant tables.
  Review Configuration: Go through the configuration settings in the FI-CA module to ensure everything is set up correctly. This includes checking the settings for billing documents and custom selections.
  User Authorizations: Verify that the user has the appropriate authorizations to perform the action. Adjust roles and permissions as necessary.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or patches that address this specific error. Applying the latest patches may resolve known issues.
  Consult SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including transaction codes, user actions, and any custom code involved.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in FI-CA, such as FKKINV (Invoice) and FKKOP (Open Items).
  Debugging: Use the SAP debugger to trace the execution of the program and identify where the error occurs.
  Logs and Traces: Check system logs (SM21) and application logs (SLG1) for additional error messages or warnings that may provide more context.
  Documentation: Review SAP documentation related to FI-CA and billing processes for best practices and troubleshooting steps.
  
  By following these steps, you should be able to identify and resolve the underlying issue causing the FKKINV502 error.