Please be aware that Geldings are excluded from the rule RCS, art 32a) Hereditary Disorders - Overbite/underbite. The exhibitors are not obliged to provide veterinary certificate.
The correct wording of the rule is as follows: 32. Hereditary disorders
a) Overbite/underbite
Overbite/underbite of more than depth of 1 tooth is not permitted.
Horses 12 months old and older cannot compete unless they have a
veterinary certificate to verify that they do not have
overbite/underbite.
Geldings do not need a veterinary certificate of hereditary disorders in order to compete.