Missed to update UCI in express entry application

Hello all, I am new to this forum. Please help me with a solution.

My wife has Canada Dependent/Open work permit visa but she has never travelled to Canada. She had UCI number but while submitting her “Express Entry” application we forgot to mention her UCI number. Today we got ITA. The “Express Entry” application that we submitted is not editable but now the “Permanent Residency” application which just appeared after ITA, is asking the same details. Question is, 1.Can we now go ahead and update the UCI number here? 2.Are we running into a risk by not updating UCI in “Express Entry” application? If so can I reject this invitation, update UCI and then submit “Express Entry” application again?