How To Fix FL034 - No preceding dynpro in internal stack

FL034 - Overview

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 034

• Message text: No preceding dynpro in internal stack

What causes this issue?

All Function Builder screens accessed in a single session are stored in
an internal stack. Objects can be removed from this internal stack
using SCREEN according to the LIFO (last in first out) principle.
The internal stack is currently empty.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FL034 - No preceding dynpro in internal stack ?

  The SAP error message FL034: No preceding dynpro in internal stack typically occurs in the context of SAP GUI programming, particularly when dealing with screen navigation and dialog programming. This error indicates that the system is trying to navigate to a screen (dynpro) that does not have a valid preceding screen in the internal stack. This can happen for several reasons, including:
  Causes:
  
  
  Incorrect Navigation Logic: The program may be trying to call a screen without having a valid previous screen in the stack. This can happen if the program logic is flawed or if there are missing calls to previous screens.
  
  
  Screen Flow Issues: If the flow of screens is not properly defined or if there are jumps in the screen sequence that do not maintain the expected stack, this error can occur.
  
  
  Program Termination: If a program terminates unexpectedly or if there is an unhandled exception, it may leave the internal stack