How To Fix PG334 - Internal error occurred while calling function module &1

SAP Error Message - Details

• Message type: E = Error

• Message class: PG - Error Messages for Master Data Programs

• Message number: 334

• Message text: Internal error occurred while calling function module &1

What causes this issue?

When you called up the &V1& function module, an exception was
triggered.
There are several possible reasons for this.
Error in the system settings
Error / inconsistency in the data
Program error (modification, note, SAP)
Other
The error should not occur because of incorrect entries.

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?

Procedure for System Administrators

Examine the error and check your entries.
If this error recurrs, carefully note the message, and how the error
occurs. If necessary, report the error to SAP.
The error occurs in the following environment:
Program '&V2&'
Form / Module '&V3&'
The function module &V1& triggered here the exception '&V4&'.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PG334 - Internal error occurred while calling function module &1 ?

  The SAP error message PG334, which states "Internal error occurred while calling function module &1," typically indicates that there is an issue with the execution of a function module in the SAP system. This error can arise from various underlying causes, and addressing it often requires a systematic approach.
  Possible Causes:
  
  Coding Issues: There may be a bug or an issue in the custom code or enhancements that are calling the function module.
  Data Issues: The data being passed to the function module may be invalid or not in the expected format.
  Configuration Issues: Incorrect configuration settings in the system can lead to this error.
  System Bugs: There may be a known bug in the SAP system version you are using that affects the function module.
  Authorization Issues: The user executing the function may not have the necessary authorizations to call the function module.
  
  Solutions:
  
  
  Check the Function Module: 
  
  Use transaction SE37 to check the function module mentioned in the error message. Look for any known issues or documentation related to it.
  
  
  
  Review Custom Code: 
  
  If the function module is being called from custom code, review the code for any potential issues, such as incorrect parameters or logic errors.
  
  
  
  Analyze the Data: 
  
  Check the data being passed to the function module. Ensure that it meets the expected format and constraints.
  
  
  
  Debugging: 
  
  Use the debugger to step through the code and identify where the error occurs. This can provide insights into what might be going wrong.
  
  
  
  Check SAP Notes: 
  
  Search the SAP Support Portal for any relevant SAP Notes that might address this specific error or the function module in question.
  
  
  
  System Logs: 
  
  Check the system logs (transaction SLG1) for any additional error messages or warnings that might provide more context about the issue.
  
  
  
  Authorization Check: 
  
  Ensure that the user has the necessary authorizations to execute the function module.
  
  
  
  Contact SAP Support: 
  
  If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SE37 (Function Builder)
  SLG1 (Application Log)
  ST22 (Dump Analysis)
  SM21 (System Log)
  
  
  
  SAP Notes: 
  
  Always check for relevant SAP Notes that may provide fixes or workarounds for known issues related to the function module.
  
  
  
  Documentation: 
  
  Review the documentation for the function module to understand its parameters and expected behavior.
  
  
  
  By following these steps, you should be able to diagnose and resolve the PG334 error in your SAP system.