How To Fix TD423 - & is invalid, OPEN_FORM is missing

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 423

• Message text: & is invalid, OPEN_FORM is missing

What causes this issue?

The specified function has been called although an OPEN_FORM was not
executed beforehand.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Please check the use of the SAPscript program interface in your
program. A print procedure must be initiated with OPEN_FORM before the
specified function can be executed.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TD423 - & is invalid, OPEN_FORM is missing ?

  The SAP error message TD423, which states "is invalid, OPEN_FORM is missing," typically occurs in the context of SAPscript or Smart Forms when there is an issue with the form processing. This error indicates that the system is trying to process a form that has not been properly initialized or opened.
  Cause:
  
  
  Missing OPEN_FORM Statement: The most common cause of this error is that the OPEN_FORM statement is missing in the ABAP program that is trying to call the SAPscript or Smart Form. The OPEN_FORM statement is necessary to initialize the form before any other form-related commands can be executed.
  
  
  Incorrect Form Name: If the form name specified in the program does not exist or is misspelled, it can lead to this error.
  
  
  Form Not Activated: If the form has not been activated after changes, it may not be recognized by the system.
  
  
  Incorrect Function Module: If the function module that is supposed to call the form is not correctly defined or is missing, it can lead to this error.
  
  
  Solution:
  
  
  Add OPEN_FORM Statement: Ensure that the OPEN_FORM statement is included in your ABAP code before any other form processing commands. The syntax typically looks like this:
  OPEN_FORM FORM 'FORM_NAME'.
  
  
  Check Form Name: Verify that the form name used in the OPEN_FORM statement matches the actual name of the form in the SAP system.
  
  
  Activate the Form: If you have made changes to the form, make sure to activate it in the SAPscript or Smart Forms transaction (e.g., SMARTFORMS or SE71).
  
  
  Review Function Module: If you are using a function module to call the form, ensure that it is correctly defined and that all necessary parameters are being passed.
  
  
  Debugging: If the issue persists, consider debugging the ABAP program to trace where the error occurs and to check the values being passed to the form.
  
  
  Related Information:
  
  SAPscript vs. Smart Forms: Understand the differences between SAPscript and Smart Forms, as the handling of forms may differ slightly.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE71 (SAPscript), SMARTFORMS (Smart Forms), and SE78 (for form maintenance).
  Documentation: Refer to SAP documentation or help resources for more detailed information on form processing and error handling.
  
  By following these steps, you should be able to resolve the TD423 error and ensure that your forms are processed correctly in SAP.