Entity
Property
Required Metadata
Optional Metadata
Comment
"email": {
"dataType": "string",
"displayName": "Email",
"inputType": "email",
"validation": {
"required": true
}
}** When you use inputType email the system will be add pattern validation "^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,4}$", you need not required to add pattern validation explicitly.