If the supplier has advised their email address needs to be updated this is how we action. This email is the address of which we send our orders to, this is the only field we can change in vendor card in NAV
Open up the vendor tab in nav
Search vendor number and open
Click related reports > vendor > distribution document
Update the email line with the new email address, removing any old ones if needed. You can add multiple email addresses when you separate them by using " ; " between each address. Ensure there are no spaces between or inside the email addresses.
It's good practice to then check a PO from this supplier and test whether the new email appears in the "To" bar on the outlook email when you print it to email.
IMPORTANT Do not leave ; at the end of an email address unless it is immediately followed by another email address. It will cause an error when carrying out the action message on req worksheet and cause the supplier not to receive the PO at all.