Here is something interesting that i missed in my CAIPS and just realized it now when reviewing medical request form my wife sent me.
Remember when i asked if UCI is same as Client ID and most responded yes its the same... well my friend, it may not be! :-\
My client id is ######68 (random # picked) and in caips is it under UCI/PartyID.
My wife's medical form had it had a different UCI# ######71 (random number but similar to real in sequence).
This freaked me out for a sec

, did they make a mistake on the Med form?

Did i send the wrong ID #?

(as they were close to each other in sequence). Maybe it will work on ecase with this new ID (it didn't). :-\
But reviewing CAIPS closely, i noticed that same UCI # (the one on med form) was under the Eligibility, Security etc etc. So PHEW and my client id matched under my details.
So ladies and gentlemen, UCI is not the same as Client ID. Better to leave it blank as i did in Updated form request. The form will still validate with barcodes.
Cheers and I hope this helps someone else in a similar situation. 8)