Prerequisites
You have defined and saved the task that is to be started or executed with the Web form.
Procedure
To generate a Web transaction from the task:

You cannot generate a Web transaction from a task,
The following dialog box is then displayed: Web Transaction for Task...: Change.
The system then creates a transaction including a module pool and screens.
The system activities (generating screens and module pool) are indicated by texts in the status line.
Result
A Web transaction with a module pool and four screens has now been created in the system. The various screens in this transaction are used to execute a single-step task and start a task.

If you change the task container after you have generated the Web transaction, you must delete the transaction in the Web Transaction for Task...: Change screen and regenerate it for the changes to take effect.
If you call the new transaction partly in the R/3 System, you will start a task.
A screen is then displayed in which you can select the import parameters for the task container.
The task is now started and a work item is generated. The number of this work item is displayed on the next screen.