AWS Simple Email Services

As title said, i have inquiry with regards the AWS SES.

Our internal IT department already using the AWS SES and verified our domain. They are using their current configured SES in our ticketing system that faced to client.

Now, we also have other internal team (Sales department) that uses different system that requires sending out of email. They are looking to also use the AWS SES but different AWS subscription from the IT department.

Will it cause any conflict with the verification or the services itself? Our IT department uses our domain for verified credentials and our Sales Department will only use emails for verified credentials.