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Fields marked with are mandatory Using an asterisk () symbol content authors notify mandatory field. This is said to be one of the accessible modes of identifying a mandatory field, however this method also will be a problem with screen readers in certain times.

How to indicate a required fieldProvide the required text in the label.Provide a graphic image in the label with appropriate alt text.Providing a star (asterisk) symbol.Use of color to identify if a form control is required.Providing HTML5 and ARIA required attributes.Jun 11, 2019

How to indicate a required fieldProvide the required text in the label.Provide a graphic image in the label with appropriate alt text.Providing a star (asterisk) symbol.Use of color to identify if a form control is required.Providing HTML5 and ARIA required attributes.11 Jun 2019

Set the Required property for a field to YesIn the Navigation Pane, right-click the table and then click Design View.Select the field that you want to require always has a value.In the Field Properties pane, on the General tab, set the Required property to Yes.

Click on gear icon then Setup > Object Manager.Choose the object > Page Layouts.Select the page layout that you use on the object.Click on the wrench icon beside the custom field that you will make required.Select the Required checkbox.Click on Ok, then click on Save.

When you make a field required, people must enter an answer to the field in order to submit their entry. When someone tries to submit an entry without filling out a required field, we highlight the problematic fields and display an error message to let them know the field is required.

Another common approach seen in forms is to mark the mandatory fields with an asterisk and not mark the optional fields. While an asterisk to the left of the label makes it easy to see, it assumes a user understands what this means.