Okla. Admin. Code § 325:25-1-7
Weight penalties are obligatory; each weight allowance is optional and must be made at time of entry. However, under no circumstances may the sex allowance be waived. Penalties and allowances are not cumulative. All allowances must be made at time of entry. No horse shall be allowed to enter or start in a race with less than one hundred nine (109) pounds unless the race is a handicap or stakes. Claims of weight allowance to which a horse is not entitled shall not be grounds for disqualification. However, sanctions may be imposed upon the person claiming allowance to which his/her horse is not entitled. No horse shall incur any penalties of eligibility or weight allowance for placement from which it was disqualified, but a horse placed through disqualification of another horse shall incur the penalties of that placement. No such placement shall make a horse ineligible to a race which has already been run.
Okla. Admin. Code § 325:25-1-7