要約

Learn why you are getting the error "We couldn't create the new mail channel as there is a configuration issue with the request type assigned for the email requests"

What is the issue with my request type? 

This error is due to the request type having one or more fields, other than summary and description, marked as required.

How do I make a request type suitable for the mail channel?

A suitable request type for receiving email requests must have both Summary and Description fields visible, and all other visible fields must be optional.

If you want to know more about the Jira Service Management email channel, please visit Receive requests from an email address.