Hi @Toriyama ,
According to my research, you can refer to the description in the official documentation:
Considerations
Following are some considerations that you should take into account when working with web API permissions.
Request permissions via SharePoint Framework solutions
At this moment, it's only possible to request additional permissions through a SharePoint Framework solution. The request is started when the solution package (.sppkg) containing a permissions request is deployed in the app catalog. After the request is started, it can be approved or denied by a global or SharePoint administrator.
Granted permissions apply to all solutions
Although permissions to Azure AD resources are being requested by a SharePoint Framework solution, once granted, they apply to the whole tenant and can be leveraged by any solution in that tenant.
Removing solution doesn't revoke permissions
Removing the solution that initially requested the particular permission doesn't revoke the granted permission. Administrators have to manually revoke permissions granted through SharePoint Framework application requests.
Revoking previously granted permissions doesn't invalidate issued access tokens
Revoking previously granted permissions doesn't invalidate access tokens issued to users. Instead, these access tokens remain valid until they expire.
Permission request doesn't affect solution deployment
No matter if the administrator denies or approves permissions requested by the solution, the solution can be deployed and used on sites. When building solutions that require additional permissions, you should never assume that the requested permissions have been granted.
More information for reference: Connect to Azure AD-secured APIs in SharePoint Framework solutions
Hope it can help you. Thanks for your understanding.
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