Applicability.
(4) Applicability. The general procedures of paragraph (a) through (m) and paragraph (o) of this section, relating to the issuance of rulings and determination letters, are applicable to requests relating to the qualification of plans covering self-employed individuals under sections 401 and 405(a) of the Code and the exempt status of related trusts or custodial accounts under section 501(a), to the extent that the matter is not covered by the specific procedures and instructions contained in this paragraph.