Connecting to Magnus Health

I'm having trouble with my code redirecting the student to Magnus Health via the token, I get Integration Gateway - External System Contact Error (158,10721) no matter how I change the configuration. Can anyone look at my code and tell me what's missing, or if the issue is more likely to be in the IB setup?

/* Step 1: Gather JSON data */

Local string &url;

Local object &crypto;

Local string &baseURI;

Local string &operationName;

Local string &jsonresultstring;

Local Message &msgRequest;

Local Document &docRequest;

Local Compound &comRequest;

Local Message &msgResponse;

Local Document &docResponse;

Local Compound &comResponse;

Local XmlDoc &XmlDocResponse;

Local boolean &responseStatus;

Local Document &docFault;