How To Fix 55891 - Internal error: error &1 in FM &2 in &3

SAP Error Message - Details

• Message type: E = Error

• Message class: 55 - Messages for development class EENO

• Message number: 891

• Message text: Internal error: error &1 in FM &2 in &3

What causes this issue?

When calling a function module (&V2&) an EXCEPTION occurred that is not
supposed to occur.
This is probably a program error or there might be some data
inconsistency.

System Response

The system cannot execute your request because of a program error.

How to fix this error?

Note the following:
message text and message number
name of the function module, the error and the calling position
transaction/report
entries leading to this error.
Send this information along with a problem message to SAP.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 55891 - Internal error: error &1 in FM &2 in &3 ?

  The SAP error message "55891 Internal error: error &1 in FM &2 in &3" indicates that there is an internal error occurring within a function module (FM) in the SAP system. This type of error is typically related to issues in the code or configuration of the function module, and it can be caused by various factors, including:
  Causes:
  
  Coding Issues: There may be a bug or an unhandled exception in the function module's code.
  Data Issues: The data being processed by the function module may be inconsistent or corrupt, leading to unexpected behavior.
  Configuration Problems: Incorrect configuration settings in the system can lead to errors when the function module is executed.
  System Bugs: There may be known bugs in the version of SAP you are using that affect the function module.
  Memory Issues: Insufficient memory or resources on the application server can lead to internal errors.
  
  Solutions:
  
  Check SAP Notes: Look for relevant SAP Notes in the SAP Support Portal that may address the specific error message or the function module in question. SAP frequently releases patches and updates to fix known issues.
  Debugging: If you have access to the development environment, you can debug the function module to identify the exact point of failure and the data being processed at that time.
  Data Validation: Ensure that the data being passed to the function module is valid and meets the expected criteria. Check for any inconsistencies or corruption in the data.
  Configuration Review: Review the configuration settings related to the function module to ensure they are set up correctly.
  System Resources: Monitor system resources (memory, CPU usage) to ensure that the application server has sufficient resources to handle the request.
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance. Provide them with the error details, including the function module name and any relevant context.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like ST22 (Dump Analysis) or SM21 (System Log) to check for any related dumps or logs that can provide more context about the error.
  Function Module Documentation: Review the documentation for the specific function module mentioned in the error message to understand its purpose and any prerequisites for its execution.
  System Version: Ensure that your SAP system is up to date with the latest support packages and patches, as many internal errors are resolved in newer versions.
  
  By following these steps, you should be able to diagnose and potentially resolve the internal error indicated by the SAP error message 55891.