Canvas enables the developer to mark the item as mandatory or conditional mandatory enabling the developer to effectively handle user input.
Mandatory Text | ConditionalMandatory Text |
The Mandatory Text indicates that an item is mandatory. The end-users must enter the values for those items marked with Required Indicators. | The Conditional Mandatory Text indicates that an item is conditionally mandatory. The users will have to enter values based on a condition. |
...
For more details of form APIs, see Form and Form Item APIs.