Unable to migrate a mailbox with the error 7903-53-12-00000000 (4317569)

Using Migrator for Notes to Exchange (MNE) to migrate a mailbox and during the check for permissions the following error occurs: 7903-53-12-00000000

The account cannot belong to a group that is explicitly denied access to the mail stores. These groups include Enterprise Admins, Domain Admins, and the Organization Management role.

Ensure the migration administrator account is not inheriting these groups from any existing group membership.