In cases of joint contractors and partners, where any one of them shall render himself liable to attachment according to law, an attachment may issue against him, upon the plaintiff, his agent, or his attorney at law complying with this article. The proceeding against such joint contractor or partner shall be in all respects as in other cases of attachment, except that such attachment shall be levied only upon the separate property of such joint contractor or partner.
OCGA § 18-3-6