Send Quotation by Email get error "Please Set Document Name"

I just sending quotation by email but i get error “Please Set Document Name”
How should i do?

Please need help
Thankyou

Send Quo

Issue

Its looks like you did some customisation for Quotation or its auto name ( sequence )
Normally when we trigger / send email from Quotation it will take “Reference Doc type” and “Reference DocName” to manage the email queue. Please check that.

In your case “Reference DocName” or Auto Name, means quotation name / number is missing so, its giving that message.

like this isn’t it?

Already Done Guys.
The Problem in doctype “Email Queue”, need to custom Naming to Random

Thank me later