Error while trying to update Apple ID
When I try and update my current Apple ID with my @icloud.com email (which is a separate account) I get an error.
"You can only add the @icloud.com address that is already on file in your account"
Can I find out what @icloud.com address is "already on file in your account" ?
[Image Edited by Moderator to Remove Personal Information]
MacBook Pro (2020 and later)