How To Fix V0300 - Source = A prohibits specification of follow-on screen group and panel

SAP Error Message - Details

• Message type: E = Error

• Message class: V0 - Screen sequence control messages

• Message number: 300

• Message text: Source = A prohibits specification of follow-on screen group and panel

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message V0300 - Source = A prohibits specification of follow-on screen group and panel ?

  The SAP error message V0300, which states "Source = A prohibits specification of follow-on screen group and panel," typically occurs in the context of screen programming or when dealing with screen sequences in SAP. This error indicates that there is a conflict in the configuration of screen groups and panels, particularly when the source of the screen is set to "A" (which usually refers to a specific type of screen or transaction).
  Cause:
  
  Screen Group Configuration: The error often arises when there is an attempt to specify a follow-on screen group or panel for a screen that is not allowed to have one. This can happen if the screen is defined in a way that does not support follow-on screens.
  Incorrect Screen Flow Logic: The flow logic defined for the screen may not be compatible with the intended follow-on screen or panel.
  Custom Development Issues: If there are custom enhancements or modifications in the screen flow, they may inadvertently lead to this error.
  
  Solution:
  
  Check Screen Attributes: Review the attributes of the screen in transaction SE80 or SE41. Ensure that the screen is correctly configured and that it is allowed to have follow-on screens.
  Review Flow Logic: Examine the flow logic (PBO and PAI modules) of the screen to ensure that it is correctly set up to handle follow-on screens. Make sure that the logic does not conflict with the screen's source type.
  Adjust Screen Group Settings: If you are using a screen group, verify that the settings for the group do not conflict with the source type of the screen. You may need to adjust the configuration to allow for the desired follow-on screen.
  Debugging: If the issue persists, consider debugging the program to trace the execution flow and identify where the error is being triggered. This can provide insights into what might be causing the conflict.
  Consult Documentation: Refer to SAP documentation or notes related to screen programming and flow logic for additional guidance on configuring screens and handling follow-on screens.
  
  Related Information:
  
  Transaction Codes: SE80 (Object Navigator), SE41 (Menu Painter), SE37 (Function Module), SE38 (ABAP Editor).
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  Community Forums: Consider searching or posting in SAP community forums or SAP support channels for insights from other users who may have encountered similar issues.
  
  If the problem continues after trying the above solutions, it may be beneficial to reach out to your SAP support team or consult with an SAP expert who can provide more tailored assistance based on your specific environment and configuration.