Server register number deleted

Hello!!
One week ago I deleted the register number of my server SUSE Linux Enterprise 12 SP4, The problem is I don not have such regiter number.
How could I get it back?
I waiting for you kind response.
I send you greeting

Gerardo Dávila.

Hi Gerardo,
you should be able to find your subscription and registration code at scc.suse.com.
Greetings