Make sure to follow the breaking changes:
https://docs.umbraco.com/umbraco-cms/fundamentals/setup/upgrading/version-specific#umbraco-17
Specifically, this part:
2.If there there is a pop-up message saying: Umbraco Deploy
License is invalid with status Pending, make sure to follow the documentation: https://docs.umbraco.com/umbraco-cloud/optimize-and-maintain-your-site/manage-product-upgrades/product-upgrades/major-upgrades#step-4-finishing-the-upgrade
Specifically, this part:
