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Add the "[Required]" attribute to the field that you want to make mandatory for insertion. The Required attribute requires the "System. ComponentModel. DataAnnotations" namespace.

Sections marked with an asterisk on registration forms, indicating that their completion is compulsory for completing the process, because the company needs the information requested to add a new contact to its database. Required fields, mandatory fields.

Click on the gear icon then Setup > Object Manager. Choose the object > Fields & Relationships. Select the custom field that you will make required. Click on Edit and under General Options select Required. Click on Save.

Different ways to make field mandatory : Make the field ?Required? at the time of field creation by checking the ?Required? check box. Make the field Required through Page Layout by checking the ?Required ? checkbook in Field Properties. Validation Rules can also be used to make the field mandatory.

You can use it when you need to ask someone to provide the necessary information to complete a form or process. For example, "Please fill out the required fields in the form to complete your registration.". similar ( 60 ) Please fill out the form below. (Asterisks mark required fields).

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.