我正在向Microsoft CRM Dynamics发出PHP SOAP请求。看起来很好，除了我得到以下错误，我似乎无法绕过它
http://www.w3.org/2005/08/addressing/soap/faulturn:uuid:{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxx}00000000-0000-0000-0000-0000000000002018-05-15T06:41:09.824Z2018-05-15T06:46:09.824Zs:Sendera:FailedAuthenticationAccess
is denied.
我做错了什么？