Dear all , 

There is Score section in Zoho CRM : for Deal / Lead/ Contact / Account

In general , we need to classify or even rating customers based on various factors. 

And the most importantly is the Purchase amount from customers. 

Currently , Account/ Contacts Score section has option for salesorder / invoices ,.... 

Hope Zoho will take alook at this ?

Or in the time being , could we set sum the invoices amount as a field for Account / Contact and do some rating from there ?

Even more complicated if you have integrated CRM and Books, invoices & salesorder will be controlled by Zoho books  , and hence , many custom function , workflow ,... in CRM will not be applicable