What the order code actually pins down
The ABB ACS800-U1-0016-5+N660+P901 is listed under Motors & Motor Controls / Drives / Motor Drives. The base code 0016-5 and the two plus-codes N660 and P901 are quoted as a single line item; a partial match missing either plus-code is a different BOM line.
Quoting the line
Send the full option string — ACS800-U1-0016-5+N660+P901 — on the RFQ so the N660 and P901 codes are not dropped at the quote stage. That keeps the option set visible to the channel and avoids the common failure mode of a base drive being offered back when the option codes were the reason this exact MPN was specified in the first place.