Leads phone number custom validation


I would like to add a custom validation to phone number field in the leads module. I looked for a solution on the internet and found some ways to do it but none worked.

Could you help me on achiveng this with a clear step by step guide.

I am using suitecrm v7.9.6


Can you try a technique like this? It does require a bit of PHP and Javascript knowledge.


Try Conditional Notifications on the CRM Store. It has a really honest price, one shot, and work like a charm!

You can create a Notification that prevents the record to be saved. It saved many hours in PHP programming and testing.