How To Fix 00030 - & not allowed in subscreens (dynpro & &)

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 030

• Message text: & not allowed in subscreens (dynpro & &)

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 00030 - & not allowed in subscreens (dynpro & &) ?

  The SAP error message "00030 - Not allowed in subscreens (dynpro & &)" typically occurs when there is an attempt to perform an action or display a field that is not permitted in a subscreen context. This error is related to the way SAP handles screen elements and their visibility or usability in different screen contexts.
  Cause:
  
  Subscreen Context: The error arises when a certain operation is attempted in a subscreen where it is not allowed. This could be due to the screen's design or the specific field's properties.
  Field Attributes: Certain fields may have attributes that restrict their use in subscreens, such as being set as "output only" or having specific screen attributes that do not allow interaction.
  Screen Flow Logic: The logic defined in the screen flow may not allow certain actions to be performed in subscreens, leading to this error.
  
  Solution:
  
  Check Screen Design: Review the screen design in the Screen Painter (SE80 or SE41) to ensure that the fields and subscreens are correctly defined and that the intended actions are allowed.
  Field Properties: Verify the properties of the fields in the subscreen. Ensure that they are not set to "output only" or have other attributes that would prevent interaction.
  Modify Logic: If the error is due to custom logic in the program, you may need to adjust the logic to ensure that it complies with the restrictions of subscreens.
  Debugging: Use the debugger to trace the execution flow and identify where the error is triggered. This can help pinpoint the exact cause and allow for targeted fixes.
  Consult Documentation: Refer to SAP documentation or community forums for specific guidance related to the version of SAP you are using, as there may be version-specific nuances.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SE80 (Object Navigator) or SE41 (Menu Painter) to access and modify screen elements.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide patches or updates that could resolve the issue.
  Community Forums: Engage with SAP community forums or support channels for additional insights or similar experiences from other users.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.