I have an application that uses the shopping api get item method. I has been working using my appID value. I was informed I had to change to oauth. I have tried substituting an oauth token generated from my keyset page and get an error. When I put the appID back in the application works. This is on August 13, 2021. AppID is not supposed to work.
The basic call to ebay is as follows:
This whole oauth process is totally confusing and based on the questions on this forum and StackOverflow I am not the only one who can't get it figured out. Are there any working examples of its use? Why is appID still working (thankfully)?