[BillyMac]

This (below) is from a draft of an article that I was preparing to write a few years ago on Administrative Infraction Technical Foul Penalties. Of course, I can't be used as a source citation, but I did put several hours of research into the article.

Technical fouls for illegal uniforms (including illegal numbers) are not charged to the team, but are charged directly to the head coach. If a team member participates as a player while wearing an illegal uniform, then a direct technical foul is charged to the head coach, who will lose the coaching box privilege for the remainder of the game. This infraction is penalized when discovered, and the team member with the illegal uniform may participate without further penalty and is not required to change the number. A maximum of one technical foul shall be charged directly to the head coach regardless of the number of offenders.

Note that I said "preparing". I never published it, mostly because of some IAABO interpretation problems, like the issue that we are discussing here in this Forum thread.

10-5-4: The head coach shall not permit a team member to participate while
wearing an illegal uniform (see 3-4).

PENALTY: (Section 5) Two free throws plus ball for division-line throw-in. The
foul is charged directly to the head coach. (Art. 4) Penalized when discovered. (Arts. 4, 5) Only one
technical foul is charged regardless of the number of offenders.

10.5.4 SITUATION B: Team A is wearing jerseys that have a visible manufacturer’s logo above the neckline. Team B’s coach informs the official of the logos just as the ball is about to be inbounded to begin the second quarter. RULING: Illegal jerseys. A technical foul is charged directly to Team A’s head coach when the infraction is discovered. Team B is awarded two free throws followed by a division-line throw-in opposite the table. Team A’s head coach has lost his/her coaching-box privileges for the remainder of the game in states utilizing the optional coaching box. (3-4-2a)