How To Fix E9891 - Internal error: Error &1 in function module &2 in &3

E9891 - Overview

• Message type: E = Error

• Message class: E9 - General IS-U Error Messages

• Message number: 891

• Message text: Internal error: Error &1 in function module &2 in &3

An EXCEPTION ocurred when a function module was called.
This may have been caused by a program error or inconsistent data.

System Response

Processing is canceled.

How to fix this error?

Please send a problem message to SAP with the following information:
The message text and message number
The name of the function module, the error, and the call location
The transaction or report
The entries which lead to this error.

Error message extract from SAP system. Copyright SAP SE.

E9891 - Details

• The SAP error message E9891, which states "Internal error: Error &1 in function module &2 in &3," is a generic internal error message that indicates that an unexpected issue has occurred within a specific function module in the SAP system. The placeholders (&1, &2, &3) will be replaced with specific error details, including the error code, the name of the function module, and the program or report where the error occurred.
  Causes:
  
  Coding Issues: There may be a bug or an unhandled exception in the function module.
  Data Issues: The input data being processed may be invalid or corrupt, leading to unexpected behavior.
  Configuration Problems: Incorrect configuration settings in the system can lead to errors during processing.
  System Environment: Issues related to the system environment, such as memory shortages or database connectivity problems, can also trigger this error.
  Transport Issues: If the function module was recently transported from another system, it may not have been properly