If a catalog is uploaded using the FTP, it was accessible by the API. We now provide you with the flexibility to access and update your offers with Bing in any form, whether it’s through a manual feed, FTP, or via API. If uploading via FTP, the file name of .tsv, .txt, or .xml files have to match the file name specified for a catalog’s settings. In the case of compressed text format, the compressed .txt file inside the archive (.zip, .gz, .gzip, .tar.gz, .tgz) must have the matching file name.
With this feature, you can now:
When can I use the API and FTP together?
Though we recommend not using the same catalog using FTP and the API, if you do so, you must wait until the FTP process completes before using the API to update the catalog. The only exception to using FTP and the API to update the same catalog at the same time is if you use the API to update only the "price," "salePrice," and "salePriceEffectiveDate" fields of the catalog.