Effective date. The effective date of the statutory licensing requirement is September 1, 2002. After September 1, 2002, a motor vehicle seller may not engage in any retail installment sales transaction without a motor vehicle sales finance license granted under this title. Any motor vehicle seller engaging in a motor vehicle sales finance transaction prior to September 1, 2002, must comply with Texas Finance Code, §348.401 and §348.402, and 7 TAC, Part 1, Chapter 1, Subchapter P, as those provisions were in effect. Failure to comply with previously required registration provisions is grounds for denial of an application made under §84.608 of this title (relating to Processing of Application).