How To Fix ACM256 - This function cannot be executed in dialog mode

ACM256 - Overview

• Message type: E = Error

• Message class: ACM - Message-Class for all ACM functions/exceptions

• Message number: 256

• Message text: This function cannot be executed in dialog mode

What causes this issue?

The function you have chosen to execute cannot be run in dialog mode.
It is expected to have long runtime and should not be interrupted in
between, therefore dialog execution is not available.

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?

This message likely indicates that you have tried to directly start a
report/function module/class method which is supposed to be called from
a higher level user interface or component.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

ACM256 - Details

• The SAP error message ACM256 ("This function cannot be executed in dialog mode") typically occurs when a function or transaction is being executed in a dialog session (i.e., through the SAP GUI) that is not designed to run in that mode. This can happen for various reasons, such as trying to execute a background job or a batch input session that is intended to run in the background.
  
  Cause:
  
  Function Module Limitation: The function module or transaction you are trying to execute is designed to run in background processing only and cannot be executed in a dialog session.
  Transaction Type: Some transactions are specifically designed for background processing (e.g., batch jobs) and will not work in the interactive mode.
  User Authorization: Sometimes, the user may not have the necessary authorizations to execute certain functions in dialog mode.
  
  
  Solution:
  
  Run in Background: If the function is intended to be executed in the background, you can schedule it