1e41f4b71Sopenharmony_ci# Ability Subsystem Changelog 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci## cl.ability.1 Permission Changed for startAbilityByCall 4e41f4b71Sopenharmony_ci 5e41f4b71Sopenharmony_ci**Access Level** 6e41f4b71Sopenharmony_ci 7e41f4b71Sopenharmony_ciPublic APIs 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci**Reason for the Change** 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ciThe **startAbilityByCall** API is a public API and does not match the **ohos.permission.ABILITY_BACKGROUND_COMMUNICATION** permission level. The permission level should be **ohos.permission.DISTRIBUTED_DATASYNC**. 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci**Change Impact** 14e41f4b71Sopenharmony_ci 15e41f4b71Sopenharmony_ciThe API calling permission is changed. 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ciThe APIs can be used only after the corresponding permission is configured. 18e41f4b71Sopenharmony_ciAfter the change, the API can be used only in migration scenarios. The corresponding system API will be provided to support more scenarios. 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ci**API Level** 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ci9 23e41f4b71Sopenharmony_ci 24e41f4b71Sopenharmony_ci**Change Since** 25e41f4b71Sopenharmony_ci 26e41f4b71Sopenharmony_ciOpenharmony SDK OpenHarmony_4.1.6.1 27e41f4b71Sopenharmony_ci 28e41f4b71Sopenharmony_ci**Key API/Component Changes** 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci| API| Before Change| After Change| 31e41f4b71Sopenharmony_ci| ------- | ----- | ------ | 32e41f4b71Sopenharmony_ci| startAbilityByCall(want: Want): Promise\<Caller> | The **ohos.permission.ABILITY_BACKGROUND_COMMUNICATION** permission is required| The **ohos.permission.DISTRIBUTED_DATASYNC** permission is required.| 33e41f4b71Sopenharmony_ci 34e41f4b71Sopenharmony_ci**Adaptation Guide** 35e41f4b71Sopenharmony_ci 36e41f4b71Sopenharmony_ciDeclare the **ohos.permission.DISTRIBUTED_DATASYNC** permission, and use the API only in migration scenarios. 37e41f4b71Sopenharmony_ci 38