Validation is a built-in concept within Live Forms.
Following forms of validation appears within appropriate fields:
Required: Requires an input / answer from user
Applies to: Textbox, Textarea, Dropdown, Radiobutton, Checkbox, File Upload, Datetime, Address, Phone, Fullname, Email, Number, Time, Birthdate, Scale Rating, Star Rating.
Email: Requires a valid email address
Applies to: Textbox
Alpha Numeric: Accepts only alphabetical or numerical value
Applies to: Textbox
Alphabetic: Accepts only alphabetical value
Applies to: Textbox
Numeric: Accepts only numerical value
Applies to: Textbox
Custom RegEx: Accepts values that match the provided RegEx Pattern
Applies to: Textbox
Input Mask: Accepts phone numbers that match the mask value
Applies to: Phone
Max Length: Accepts value with total characters count that is less than or equal to max length
Applies to: Textbox
Max Size: Accepts value that is less than or equal to max size
Applies to: Number
Min Size: Accepts value that is greater than or equal to min size
Applies to: Number
Entry Limit: Limits the user input to specific number of characters or words.
Applies to: Textarea
BEFORE SUBMISSION VALIDATION
Form Validation Actions. before accepting the submission show an error
It show validation error before submit the form.
Form Validate Action, it validates on the form field before accepting the submission with ability to reject submission and show besides error.