To reject invalid requests and prevent unnecessary processing, you can whitelist incoming request types per adapter. This is helpful in not only keeping a tidy transaction log, but will reduce your error rate and therefore limit false-positive error alerts.
To configure your adapter whitelist, select Whitelist from the main adapter page. Then choose from the available HTTP request methods (GET, POST, HEAD, PUT, DELETE) and press Save. Inbound requests that do not match one of your selected methods will be rejected with an HTTP status code of 405, Method Not Allowed. By default only the GET and POST methods will be accepted.
Note: Though they are not stored in the transaction log, rejected transactions still count against your monthly allotment.