rest error

i got the following error when submitting data into STEP 1:

Error executing “CreateDistribution” on “https://cloudfront.amazonaws.com/2016-11-25/distribution”; AWS HTTP error: Client error: POST https://cloudfront.amazonaws.com/2016-11-25/distribution resulted in a 404 Not Found

i correctly put: key, secret, domain (i tried to input some variations), min cache = 3600, max cache = 86400, price = Us canada europe