Hello @all.
My question is that can we add custom validation on frontend in anguler side that not replicate when we upgrade our crm.
second as this possible in Suitecrm 8 like i want to make validation on email in the contact on client side that there well be @ in email input and also required the field when empty.
Hi, welcome to the Community! 
There is not much documentation for v8 yet, but here is something similar to what you need
Thank you for reply.