Okla. Admin. Code § 260:45-1-5
In the event there appears to be a conflict between information contained in the rules in this title and the benefit administration procedures or guidelines as adopted by EGID, and any information contained within any handbook or any other written materials, including any letters, bulletins, notices, or any other written document, or oral communication, regardless of the source, such conflict shall always be resolved by a strict application of the rules in this title or the benefit administration procedures or guidelines as adopted by EGID, and no conflict will be resolved by application of the erroneous information contained within the handbook or other written document when the result would be contrary to the limitations set forth in the rules in this title, and the benefit administration procedures or guidelines as adopted by EGID. All erroneous, incorrect, misleading or obsolete language contained within any handbook or any other written document or oral communication, regardless of the source, shall be void from the inception, and of no effect under any circumstances.
Okla. Admin. Code § 260:45-1-5