(a) Except as provided in subsection (b) of this section, a person who makes a contribution to a business enterprise and erroneously but in good faith believes that he has become a limited partner in the enterprise is not a general partner in the enterprise and is not bound by its obligations by reason of making the contribution, receiving distributions from the enterprise, or exercising any rights of a limited partner, if, on ascertaining the mistake, he
(1) Causes an appropriate certificate of limited partnership or a certificate of amendment to be executed and filed; or