How To Fix 37803 - Collision at target location. Step loop not moved

SAP Error Message - Details

• Message type: E = Error

• Message class: 37 - Screen Painter

• Message number: 803

• Message text: Collision at target location. Step loop not moved

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 37803 - Collision at target location. Step loop not moved ?

  The SAP error message "37803 Collision at target location. Step loop not moved" typically occurs in the context of SAP ABAP programming, particularly when dealing with screen programming and the use of screen sequences in dialog programming. This error indicates that there is a conflict or collision in the screen flow logic, specifically when trying to move a step loop or navigate to a different screen.
  Cause:
  
  Screen Flow Logic Issues: The error often arises when there are conflicting commands in the screen flow logic, such as trying to navigate to a screen that is already being processed or when there are multiple screen sequences that interfere with each other.
  Incorrect Use of Step Loops: If you are using step loops (e.g., LOOP AT ... ENDLOOP constructs) and trying to navigate or change screens while still processing the loop, this can lead to a collision.
  Screen Attributes: The attributes of the screen or the way the screen is defined may not allow for the intended navigation or processing.
  
  Solution:
  
  Review Screen Flow Logic: Check the logic in your screen processing code. Ensure that you are not trying to navigate to a screen while another screen is still being processed. Make sure that the sequence of screen calls is logical and does not overlap.
  Properly Handle Step Loops: Ensure that you are exiting the step loop correctly before attempting to navigate to another screen. You may need to use LEAVE TO SCREEN or similar commands appropriately.
  Debugging: Use the debugger to step through the code and identify where the collision occurs. Look for any CALL SCREEN or LEAVE TO SCREEN statements that may be executed while a step loop is still active.
  Check Screen Attributes: Verify the attributes of the screens involved. Ensure that they are set up correctly and that there are no restrictions that would prevent the intended navigation.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for screen programming and dialog programming for more detailed information on handling screen flow and step loops.
  SAP Community: Engage with the SAP Community forums where other developers may have encountered similar issues and can provide insights or solutions.
  ABAP Development Guidelines: Review best practices for ABAP development, particularly regarding screen handling and user interface design.
  
  By carefully reviewing the screen flow logic and ensuring that step loops are handled correctly, you should be able to resolve the "37803 Collision at target location" error.