Chapter 3 set out who owes which notification. What belongs here is why they matter across a two-year cycle, and § 6.1 supplied the reason: the notice of impending expiration goes to the holder’s last known address, and that address is only as current as the last filing made under 28 TAC § 34.610 or 28 TAC § 34.611. A firm or licensee who moves and files nothing has not committed a paperwork offense in isolation — they have quietly disconnected the one warning they are owed before the clock runs out.

The duties are split across two rules — 28 TAC § 34.610 carries the firm’s and 28 TAC § 34.611 the licensee’s, and § 3.4 lists both in full. What matters across a renewal cycle is that one event sits on both lists at once. A licensee joining a firm requires a revised license from the licensee under 28 TAC § 34.611, and notification of that employment from the firm under the same rule, each within 14 days — two filings from two parties, and each is the common place for the other to be assumed.

One duty in the set is not a notification at all, and a reader who treats fourteen days as a uniform reporting window will file it two weeks too late. Under 28 TAC § 34.610 a TOTAL CHANGE of a firm’s ownership invalidates the current certificate, and the complete application for a new certificate must be submitted at least 14 days BEFORE the change — the same number, running the opposite way. A partial change of ownership is treated far more lightly, requiring a revised certificate only where it affects the firm’s name, location, or mailing address. And 28 TAC § 34.612 closes off the shortcut that suggests itself when a detail on a credential has gone out of date: altering a certificate, license, or approval renders it invalid and is itself the basis for administrative action. The filing is the only way to change what a credential says.