I believe Okla. officially refers to it as SDA license/permit.
Self Defense Act was the title of the legislation enacting handgun carry in Okla.
A handgun license when issued shall authorize the person to whom the license is issued to carry a loaded or unloaded handgun, concealed or unconcealed, as authorized by the provisions of the Oklahoma Self-Defense Act, and any future modifications thereto.
TITLE 21 § 1290.5