Service of citation or other process on a partnership is made by personal service on a partner. Service of citation or other process on a partnership in commendam is made by personal service on a general partner. When the officer certifies that he is unable, after diligent effort, to make service in this manner, he may make personal service on any employee of suitable age and discretion at any place where the business of the partnership or partnership in commendam is regularly conducted.
La. C.P. § 1263