either should be able to get him the information, when hubby logs into his E-cas with his information when he clicks on the decision made under sponsorship it takes him to my E-cas with the rest of the info guess my point is.. as long as the Client ID and birthday go together the two should be intertwined so to speak. That being said, I personally would use the applicants UCI and birth date if you already have sponsorship approval, you want to know specifically about your Husband's application.