And on working day three, Roger did receive this message.
And lo, Roger did weep, then ask for part FMA-09-003821, which is functionally identical to FMA-09-003828, and he did wish that they had spake to him yesterday, or verily hath just substituted it and sendeth the order on that day. And there was much lamenting.
Well, it happens, and it's no biggie in the end. Pretty clear communication as well.