Hi @john john ,
According to my research and testing, Remote event receivers (RER) can handle events that take place on items (Lists/List Items/Add-Ins). You can use remote event receivers to handle events in the SharePoint Add-in model. Use
AppUninstalling events to set up or remove SharePoint objects and other event receivers your add-in needs.
Here is a document about use remote event receivers in SharePoint, you can refer to it: https://learn.microsoft.com/en-us/sharepoint/dev/solution-guidance/use-remote-event-receivers-in-sharepoint
Hope it can help you. Thanks for your understanding.
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