How To Fix AJ026 - Internal error in form &1 (function module &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: AJ - Billing program

• Message number: 026

• Message text: Internal error in form &1 (function module &2)

What causes this issue?

An internal error has occurred in form &V1& in function module &V2&.
This is probably a programming error which you cannot resolve.
Note: the field &V3& has the value &V4&

System Response

The processing of the function module must be canceled

How to fix this error?

INCLUDE ISU_SAP OBJECT DOKU ID TX

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AJ026 - Internal error in form &1 (function module &2) ?

  The SAP error message AJ026, which states "Internal error in form &1 (function module &2)," typically indicates that there is an issue within a specific function module or form routine in the SAP system. This error can arise due to various reasons, including programming errors, inconsistencies in data, or issues with the configuration.
  Causes:
  
  Programming Errors: There may be a bug or an unhandled exception in the ABAP code of the function module or form.
  Data Inconsistencies: The data being processed may not meet the expected criteria, leading to unexpected behavior in the function module.
  Configuration Issues: Incorrect configuration settings in the related modules can lead to this error.
  System Bugs: There may be known bugs in the version of SAP you are using that could cause this error.
  
  Solutions:
  
  Check SAP Notes: Look for relevant SAP Notes in the SAP Support Portal. SAP often provides fixes or workarounds for known issues.
  Debugging: If you have access to the ABAP development environment, you can debug the function module or form to identify the exact point of failure.
  Data Validation: Ensure that the data being processed is valid and meets the expected formats and constraints.
  Review Custom Code: If there are any custom enhancements or modifications related to the function module, review them for potential issues.
  System Update: Ensure that your SAP system is up to date with the latest patches and updates, as these may resolve known issues.
  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: You may want to use transaction codes like SE37 (Function Module), SE80 (Object Navigator), or SE38 (ABAP Editor) to investigate the function module or form in question.
  Logs and Traces: Check the system logs (transaction SLG1) and short dumps (transaction ST22) for additional information that may help diagnose the issue.
  Testing: If possible, replicate the issue in a development or quality assurance environment to test potential fixes without affecting production data.
  
  By following these steps, you should be able to identify the cause of the AJ026 error and implement a suitable solution.