I use the push kit to send notifications to Huawei devices. As you know, when using API, it is necessary to give an appId in the link as follows. "https://push-api.cloud.huawei.com/v1/app_id/messages:send"
I will define a firewall rule for this link. So I was wondering if the appId might change. Because if appId changes I will have to change the definition as well.
Could you please give me information on this subject if I ask?
That app_id in the link is the identifier of the app receiving your push messages.
Once an app is registered with AppGallery and gets allocated an app_id, then this identifier cannot be changed anymore. During the whole life of the app inside AppGallery, app_id stays the same.
In conclusion, if you target just one app, app_id will not change in the link. But maybe at some point you wish to send push messages to a new app you develop, with its own app_id different than the original one - case in which the difference will be reflected in the link.