Source Link: https://www.facebook.com/business/help/125074381480892?id=725943027795860
A data feed file is a spreadsheet file that allows you to bulk upload many items to your catalogue at once. You can either upload your file as a one-off upload or set scheduled uploads to update your catalogue hourly, daily or weekly. Follow the steps below to upload a new file to your catalogue. You can upload multiple files to your catalogue, but they must all contain different items.
Note: The steps below are for uploading a new file. If you already uploaded a file and now want to update the items in it, update your existing file instead. Otherwise, you’ll see an error message because you can’t upload the same items in multiple data feeds.
To upload a new data feed file to a catalogue:
Depending on which upload option you selected in step 5, continue your file upload with the steps below.
To set up scheduled feed uploads, you’ll need to save your file on a file hosting website such as Dropbox or Google Drive and tell us the URL. The file size limit for scheduled uploads is 8 GB.
You’ve set up scheduled feed uploads. From now on, to update your catalogue inventory, edit your data feed file and save it again on your hosting website. We’ll fetch your item information from your URL and update your catalogue automatically.
If you don’t update your inventory very often, you can choose to upload your file as a one-off upload.
You’ve uploaded items to your catalogue with a single file upload. When you want to update your inventory in the future, update your existing file in your data feed settings.
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