215 Bad Authentication Data


Yesterday, messages were being posted fine through the API, but today we’re encountering these 215 errors being returned. We’re using version 1.1 of the API and abrams twitteroauth PHP library, I’ve tried revoking permissions and requesting them again, everything works fine, I get a refreshed access token and secret.

But any action using that access token and secret throws this 215 error. Is this something to do with the underlying account hosting the app itself requiring “verification by phone number”? i.e. is the fact the account is not verified blocking any API requests made through an app created by that account?