1e41f4b71Sopenharmony_ci# Application Access Control Subsystem Changelog 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci## cl.sucurity_access_token.1 Changes in the Event Subscription and Cancellation APIs 4e41f4b71Sopenharmony_ci 5e41f4b71Sopenharmony_ci**Change Impact** 6e41f4b71Sopenharmony_ci 7e41f4b71Sopenharmony_ciThe applications developed based on earlier versions are not affected. 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci**Key API/Component Changes** 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ciInvolved APIs: 12e41f4b71Sopenharmony_ciinterface/sdk-js/api/@ohos.privacyManager.d.ts: 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ciprivacyManager.on 15e41f4b71Sopenharmony_ci 16e41f4b71Sopenharmony_ciprivacyManager.off 17e41f4b71Sopenharmony_ci 18e41f4b71Sopenharmony_ciFrom this version: 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ciMultiple callbacks can be registered if **permissionList** is the same. 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ciThe same callback cannot be registered if **tokenIDList** is overlapped. 23e41f4b71Sopenharmony_ci 24e41f4b71Sopenharmony_ciIf callback is not passed in **privacyManager.off**, all callbacks under **permissionList** will be unregistered. 25