Ariz. Rev. Stat. § 32-1004
A. The following persons are exempt from this chapter when engaged in the regular course of their respective businesses but shall comply with the requirements of section 32-1051, paragraphs 2 through 6 and section 32-1055, subsection C and subsection D, paragraphs 1, 2, 3 and 5:
13. An accounting, bookkeeping or billing service provider that complies with all of the following:
B. For the purposes of subsection A, paragraph 12 of this section:
C. For the purposes of subsection A, paragraph 13, subdivision (b) of this section, the initial written notice and follow-up notice may contain only the following information: