Missing automatically created managed property for custom choice column

Patricia_nl 

Yes, correct. You have to add the values in those columns to be available as crawled properties in SharePoint. 

You also have to wait until SharePoint crawls the data for your list/library. Usually crawling is done every 15 minutes in SharePoint Online.

If the content is not crawled automatically for few hours, you can manually request crawling and reindexing for your document library/list. Check this documentation for more information: Manually request crawling and reindexing of a SharePoint site, a library or a list 

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