How To Fix TD151 - Too many main windows defined

SAP Error Message - Details

• Message type: E = Error

• Message class: TD - SAPscript: Text editor, composer, forms, styles and fonts

• Message number: 151

• Message text: Too many main windows defined

What causes this issue?

Too many main windows have been defined (&V1& * &V2& = &V3&).

How to fix this error?

Select a figure (horizontal and vertical) so that a maximum of 99 main
windows is defined.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TD151 - Too many main windows defined ?

  The SAP error message TD151 ("Too many main windows defined") typically occurs when you are working with SAPscript forms or Smart Forms and you have defined more main windows than the system allows. In SAPscript, a form can have only one main window, while Smart Forms can have multiple main windows, but there are still limits based on the design.
  Cause:
  
  Exceeding Limits: The error is triggered when the number of main windows defined in a form exceeds the allowed limit. For SAPscript, this is usually one main window, while Smart Forms can have multiple but still have a maximum limit.
  Incorrect Form Design: If you are trying to create a complex layout with multiple main windows without adhering to the design constraints, this error can occur.
  
  Solution:
  
  Review Form Design: Check the form you are working on (either SAPscript or Smart Forms) and ensure that you have the correct number of main windows defined. For SAPscript, ensure there is only one main window.
  Consolidate Windows: If you have multiple main windows, consider consolidating the content into a single main window or using secondary windows for additional content.
  Adjust Layout: If you are using Smart Forms, review the layout and see if you can achieve the desired output with fewer main windows or by using other types of windows (like secondary or text windows).
  Check Documentation: Refer to the SAP documentation for the specific version you are using to understand the limitations and best practices for form design.
  
  Related Information:
  
  SAPscript vs. Smart Forms: Understand the differences between SAPscript and Smart Forms, as they have different capabilities and limitations regarding window definitions.
  SAP Notes: Check for any relevant SAP Notes that might address this issue or provide additional guidance on form design.
  Testing: After making changes, test the form thoroughly to ensure that it meets the requirements and does not produce any further errors.
  
  By following these steps, you should be able to resolve the TD151 error and successfully design your form in SAP.