Keychain value removed after adding com.apple.security.application-groups

After adding the necessary rights to enable application groups, my user credentials were erased (they were saved in the keychain). The query I'm using to save the password is the following:

NSData *valueData = [value dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *query = @{(__bridge id)kSecClass: (__bridge id)kSecClassGenericPassword,
                        (__bridge id)kSecAttrAccessible: (__bridge id)kSecAttrAccessibleWhenUnlockedThisDeviceOnly,
                        (__bridge id)kSecAttrService: service,
                        (__bridge id)kSecAttrAccount: key,
                        (__bridge id)kSecValueData: valueData,
                        };

      

        
        
        
      

    

And then extracting it:

NSDictionary *query = @{(__bridge id)kSecClass: (__bridge id)kSecClassGenericPassword,
                        (__bridge id)kSecAttrAccessible: (__bridge id)kSecAttrAccessibleWhenUnlockedThisDeviceOnly,
                        (__bridge id)kSecAttrService: service,
                        (__bridge id)kSecReturnAttributes: (__bridge id)kCFBooleanTrue,
                        (__bridge id)kSecReturnData: (__bridge id)kCFBooleanTrue};

      

        
        
        
      

    

The only key my rights have:

com.apple.security.application-groups

      

        
        
        
      

    

What is the array with my bundle id. Am I missing something in the permissions file?