Support SharePoint lookup fields when creating list items via Microsoft Graph
It is currently possible to retrieve this data, but it appears there is no current way of creating a new lookup field via Microsoft Graph. Any attempt at such a call will either return 200 ok, but leave the lookup field blank, or return 400 bad request (or the like).
Thank you for your feedback! We are investigating the technical requirements to see if we can move this to the backlog. We will post updates here as a decision is made. -EY
John Handcock commented
This is integral for our investment into the Graph API