Okla. Stat. tit. 43, § 43-601-301: Proceedings under this act

A. Except as otherwise provided in this act, this article

applies to all proceedings under this act.

B. An individual petitioner or a support enforcement agency may

initiate a proceeding authorized under this act by filing a petition

in an initiating tribunal for forwarding to a responding tribunal or

by filing a petition or a comparable pleading directly in a tribunal

of another state or a foreign country which has or can obtain

personal jurisdiction over the respondent.