Please tell me the difference between [assign] activity and [multiple assign] activity.
[multiple assign] activity is the fully upward compatible of [assign] activity?
Assign activity you can assign value to only one variable at a time
But with multiple assign activity we can Perform multiple assign actions, enabling you to assign values to multiple variables without the need to use multiple Assign activities. A common use case for this activity is initialization before large processes, sparing the user of the need to configure multiple Assign activities.
Assign: Allows You can assign only a single variable
Multiple Assign: This allows you to assign Multiple Variables
You can also refer to the below documentation