pg_redirect_url. Redirect the client to it: the client enters the card data and pays on the page.pg_result_url, see Result notify. After the payment the client is returned to pg_success_url or pg_failure_url.status_v2.200; the error is returned in pg_error_code and pg_error_description. Error responses are not signed.pg_sig is calculated with the secret key test_secret_key.