There are some upcoming changes in Azure API Management. Full list is given below. Main one is stv1 Platform retirement. And the retirement date is August 31st 2024. So make sure you move to the upgraded version before the retirement date.
How to check? - On the Azure portal, if you open the Azure API Management, you could see the platform version on the Overview blade.
Full List:
https://learn.microsoft.com/en-us/azure/api-management/breaking-changes/overview