In April, we announced we were deprecating the old api/custom_resources/ paths. The time has come to finally turn those old paths off.
We'll officially turn off the old paths for the Custom Objects API at 10am Pacific, Friday, February 7th, 2020. Proactive communications have gone out to all customers still using the old paths. As a reminder, we changed custom objects' API paths officially in March of 2019, so all new endpoints have been designated with the api/sunshine/ path since that time.
For a full list of side-by-side old and new path references, please take a look at our Custom Objects API path renaming article.