How To Fix CU400 - Internal error: &1 &2 &3 &4

CU400 - Overview

• Message type: E = Error

• Message class: CU - Variants / configuration messages

• Message number: 400

• Message text: Internal error: &1 &2 &3 &4

What causes this issue?

A processing error has occurred, which could be due to either a program
error or inconsistent data.

System Response

Processing is terminated.

How to fix this error?

Check whether the error is in one of your own programs. If you cannot
find the cause of the error, please contact the SAP Hotline.

Error message extract from SAP system. Copyright SAP SE.

CU400 - Details

• The SAP error message CU400, which states "Internal error: &1 &2 &3 &4," is a generic error message that indicates an internal issue within the SAP system. This error can occur in various contexts, often related to configuration or data processing in the SAP system, particularly in the areas of Customizing or Master Data.
  Possible Causes:
  
  Data Inconsistencies: There may be inconsistencies or corruption in the data being processed.
  
  Configuration Issues: Incorrect or incomplete configuration settings in the system can lead to this error.
  Program Errors: There may be bugs or issues in the custom programs or standard SAP programs being executed.
  Authorization Issues: Lack of proper authorizations for the user executing the transaction can sometimes trigger internal errors.
  System Performance: Performance issues or resource limitations (like memory or processing power) can also lead to internal errors.
  
  Solutions:
  
  Check Logs: Review the system logs (transaction codes like SLG1 for application logs) to get more details about the error.