SAP Basis Tech Supports

Symptom
As of Basis Release 4.6C (SAP Web Application Server), you can generate HTML templates from the screens of existing ABAP programs using the Web Application Builder (transaction SE80). You can then use the templates in Internet Application Components (Easy Web Transactions) and display them in the Web browser using the SAP Internet Transaction Server.
Occasionally, when you are using the generated templates, errors will occur that are displayed in the browser.
Other terms
SE80; workbench; SAP ITS; ITS; IAC; EWT; generate template; generate;
“Generate HTML from screen”
Reason and Prerequisites
The template generation does not intend to generate completely executable templates in every case (it may even be impossible to generate useful templates, usually if the relevant transaction cannot be executed in the SAP GUI for HTML).
The automatic generation of templates is a tool for creating a frame which then needs to be modified by the developer of the new application until it is fully executable.
Solution
After you have created the templates with transaction SE80, check if they can be executed correctly. If problems occur, you must correct the templates as required.