According to TICA Standing Rule: 601.1 Unregistered Cats.
Unregistered cats may be shown only once in TICA without a registration number. All points and/or wins for titles and/or Annual Awards acquired by an unregistered cat in the second and/or subsequent shows shall be irrevocably lost. The exhibitor is obligated to furnish the registration number to the entry clerk or master clerk and the Executive Office. In order to obtain credit for any points and/or wins received at the first show where the cat, kitten alter or household pet adult was shown as unregistered, the owner must notify the Executive Office in writing requesting the first show to be credited and stating the name, date and location of the show, and the name, breed (if applicable), registration number, and entry number.
A written request can be submitted by email to scoring@tica.org