添加com.apple.security.application-groups后删除了Keychain值

Question

添加启用应用程序组的必要权利后，我的用户凭据被擦除（它们存储在钥匙串中）。我用来保存密码的查询是：

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,
                        };

然后取出它：

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};

我的权利唯一的关键是：

com.apple.security.application-groups

这是一个包含我的包标识符的数组。我是否遗漏了权利文件中的内容？