Sharing data between Targets via App groups but Userdefault Container is null

Dear Apple Support Team, I am trying to shared data between two different App target. Target A is main iOS app and Target B is Intent Extension. I have create app group and utilise app group to share data between different target but when setting the user default from Target B stile getting container null. Target B UserDefault object details sharedDefaults UserDefaults 0x0000600000c05110 baseNSObject@0 NSObject kvo id 0x0 0x0000000000000000 [0] id identifier __CFString * "group.com.xxxx. xxxx" 0x0000600001704900 container __CFString * NULL 0x0000000000000000 _volatileDomainNames id 0x0 0x00000...