How many licenses of SUSE Linux Enterprise Server are required to run RMT server?

I have 100 servers with SUSE Linux Enterprise Server operating system in the organization. These servers are unlicensed. I want to create an RMT server to create a local repository in the organization so that the servers can download packages and updates from the RMT server. to receive

How many licenses do I need?

Is it enough if I get only one license for the RMT server or should I get a license for all 100 servers so that these servers can receive packages and updates from the RMT server?