How To Fix NI143 - Unexpected error in the function module &1 (error code &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: NI - Document index processing

• Message number: 143

• Message text: Unexpected error in the function module &1 (error code &2)

What causes this issue?

An unexpected error occurred in function module &V1& (error code &V2&).

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Inform your system administrator.

Procedure for System Administrators

Inform SAP.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message NI143 - Unexpected error in the function module &1 (error code &2) ?

  The SAP error message NI143, which states "Unexpected error in the function module &1 (error code &2)," typically indicates that there is an unexpected issue occurring within a specific function module in the SAP system. This error can arise from various underlying causes, and resolving it often requires a systematic approach.
  Possible Causes:
  
  Data Issues: There may be inconsistencies or corruption in the data being processed by the function module.
  Configuration Problems: Incorrect configuration settings in the system can lead to unexpected behavior in function modules.
  System Bugs: There may be bugs in the SAP system or the specific function module that need to be addressed.
  Authorization Issues: Lack of proper authorizations for the user executing the function can lead to errors.
  Performance Issues: System performance problems, such as timeouts or resource limitations, can trigger unexpected errors.
  Custom Code: If there are custom enhancements or modifications to the standard function module, they may introduce errors.
  
  Solutions:
  
  Check the Error Log: Use transaction codes like SLG1 (Application Log) or ST22 (Dump Analysis) to get more details about the error. This can provide insights into what went wrong.
  Review the Function Module: Analyze the specific function module mentioned in the error message. Check for any known issues or patches available from SAP.
  Data Validation: Ensure that the data being processed is valid and does not contain any inconsistencies or corruption.
  Configuration Review: Verify the configuration settings related to the function module and ensure they are set up correctly.
  User Authorizations: Check if the user has the necessary authorizations to execute the function module.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address the specific error code or function module.
  System Performance: Monitor system performance and resource usage to identify any bottlenecks that may be causing the error.
  Debugging: If you have access, consider debugging the function module to trace the execution and identify where the error occurs.
  
  Related Information:
  
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. Provide them with the error details, including the function module name and error code.
  Community Forums: Check SAP Community forums or other online resources where similar issues may have been discussed.
  Documentation: Review the official SAP documentation for the function module in question to understand its expected behavior and requirements.
  
  By following these steps, you should be able to diagnose and resolve the NI143 error in your SAP system.