How To Fix CMT2138 - Call up of methods from subscreen not allowed

CMT2138 - Overview

• Message type: E = Error

• Message class: CMT2 - Add-On Version: Message Class in CM Environment

• Message number: 138

• Message text: Call up of methods from subscreen not allowed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CMT2138 - Call up of methods from subscreen not allowed ?

  The SAP error message CMT2138, which states "Call up of methods from subscreen not allowed," typically occurs in the context of ABAP programming when there is an attempt to call a method from a subscreen that is not permitted. This can happen in various scenarios, particularly when dealing with custom screens or enhancements in SAP.
  
  Cause:
  
  Subscreen Context: The error arises when a method is called from a subscreen context where it is not allowed. In SAP, certain methods can only be called from the main screen or specific contexts.
  Incorrect Screen Flow Logic: The screen flow logic may be incorrectly set up, leading to an attempt to invoke methods that are not designed to be called from subscreens.
  Enhancements or Modifications: If there are custom enhancements or modifications in the program, they might inadvertently lead to this error by trying to access methods inappropriately.
  
  
  Solution:
  
  Review Method Calls: Check the code where the method is