1# Bundle Manager Subsystem Changelog 2 3## cl.bundlemanager.1 Non-MDM Applications Granted with the MDM Permission Cannot Be Installed 4 5**Access Level** 6 7System APIs 8 9**Reason for Change** 10 11The MDM permission can be granted only to MDM applications. 12 13**Change Impact** 14 15Non-MDM applications granted with the MDM permission cannot be installed. 16 17The **app-distribution-type** field in the [signing certificate](../../../application-dev/security/app-provision-structure.md) is used to determine whether an application is an MDM application. 18* If **app-distribution-type** is **enterprise_mdm**, the application is an MDM application. 19* If **app-distribution-type** is not **enterprise_mdm**, the application is a non-MDM application. 20 21The **availableType** attribute in the **definePermissions** field in the [config.jso file](https://gitee.com/openharmony/utils_system_resources/blob/master/systemres/main/config.json) is used to determine whether the MDM permission is granted. 22* If **availableType** is **MDM**, the MDM permission is granted. 23* If **availableType** is not **MDM**, the MDM permission is not granted. 24 25**Change Since** 26 27OpenHarmony SDK 4.1.3.1 28 29**Key API/Component Changes** 30 31To grant the permission to an application, declare the permission in the [module.json5 file](../../../application-dev/quick-start/module-structure.md#internal-structure-of-the-reqpermissions-attribute) if the application is developed based on the stage model or in the [config.json file](../../../application-dev/quick-start/module-configuration-file.md#requestpermissions) if the application is developed based on the FA model. Non-MDM applications cannot apply for the MDM permission. 32 33**Adaptation Guide** 34 35Check whether your application is an MDM application. If not, do not request the MDM permission. 36