When sending an invoice through print management, I want the email subject to read something like "Invoice 1234", with 1234 being the actual invoice ID.
I find this undertaking exceedingly frustrating having found and changed the email subject now in roughly 473 places, only to still find the original subject text in my mail inbox....

The customer is using BottomLine Transform for output management, but I don't believe that is relevant since it will simply pick-up the email settings from AX.
Can someone who actually knows how to do this point me in the right direction....please? I will rename my first-born after you.