Definition of a Multistep Task 
A multistep task is a formal framework for a workflow definition. When you create a workflow directly in the Workflow Builder, the multistep task is created by the system.
Multistep tasks can be divided into workflow template and workflow tasks.
Caution
New multistep tasks must be created as workflow templates. Workflow tasks can no longer be created, but can be edited. There will be no functional enhancements for workflow tasks.
A multistep task contains a reference to a workflow definition. The business activity described with the multistep task therefore usually covers several steps in what may be a complex arrangement. This is a major difference when compared with tasks.
A multistep task defines the formal framework for a workflow definition with the description of the interface. In addition to the reference to the workflow definition, the multistep task contains other information:
Definition of the workflow container (interface description)
Triggering events

The definition of workflow templates is spread across several tab pages.
Basic Data
Description
Triggering Events
SAPphone
Note
Workflow tasks are defined on a screen without tab pages. But the activities to be carried out are the same.
You should adhere to the following sequence when defining multistep tasks (and analyzing existing multistep tasks):
What? |
Where? |
|---|---|
Tab page Basic data |
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Tab page Trigger Events |
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Tab page Description |
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Tab page SAPphone |