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