OAuth authentication failure

The call to RequestToken failed. Please review the request and response below.

Request

GET https://secure.tmsandbox.co.nz/Oauth/RequestToken?scope=
Authorization: OAuth oauth_callback=http%3A%2F%2Fdeveloper.trademe.co.nz%2FAuthenticateCallback, oauth_consumer_key=, oauth_signature_method=PLAINTEXT, oauth_signature=%26

Response

HTTP/1.1 400 BadRequest

The oauth_consumer_key parameter is required.

Need a hint?

If you are getting callback domain errors, make sure you (or the owner of the application) have added https://developer.trademe.co.nz to the list of allowed callback domains.