Passport back with wrong UCI number?! BUFFALO!

[jlewison]

Hi all,
I am hoping someone can help me with a question I have...I just got my passport back yesterday with my visa attached and I noticed one error.  My UCI(unique client number) is off my one number.  Everything else is right and the important things that they tell you to look at(name, dob, etc) are all right.  Maybe this number changes once everything has been apporved?
I am wondering if I should contact them about this and also wondering if for some this number needs to be changed, how long will it take to do?  Has anyone had to re-send thier passport back to Buffalo because of a mistake and if so, what did you need to do and how long did it take?  I'm hoping this isn't a big deal but hoping that someone can answer my question! 
Thank you!!!