Hi Caleb,
APM tracks outgoing HTTP, HTTPS, RMI, EJB, JMS, JCA, WebService etc and other standard JEE or J2SE calls. If under the covers SAP uses one of the standard remote calls, then it will be tracked. We may have to enable some custom instrumentation depending on the call that you are referring to. Can you please mention the actual SAP call along with API, so that we can provide a better answer.
Thanks