How To Fix TD503 - Header data &1: First page &2 not defined

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 503

• Message text: Header data &1: First page &2 not defined

What causes this issue?

A first page is not specified in the header data of the form, or the
specified page does not exist in the form.

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?

Every form must have a first page defined for it. Please enter a page
which is already defined in the form as the first page or create a new
page for use as a first page.

Error message extract from SAP system. Copyright SAP SE.