How to link O365 CRM to O365 Sharepoint to create sites in Sharepoint?

Hi,

I have done some client script to create sharepoint sites through inputs.But i want to get the account data of CRM then link it to sharepoint. If the account has already exist with their related sites in sharepoint, i want to get validation error otherwise it should create a new site in sharepoint. Is it possible through CRM?

Help me please