So I tried a test with the NW GW Client and this is what I got back ... doesn't seem right:
<?xml version="1.0" encoding="utf-8" ?>
-<error xmlns="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">
<code>SY/530</code>
<message xml:lang="en">RFC call ended with "Communication Failure" exception (An exception with the type /IWBEP/CX_MGW_BUSI_EXCEPTION occurred, but was neither handled locally, nor declared in a RAISING clause).</message>
-<innererror>
<transactionid>533C172709FD09F0E1008000AC110A43</transactionid>
-<errordetails>
-<errordetail>
<code>/IWBEP/CX_SD_GEN_DPC_TECH</code>
<message>RFC call ended with "Communication Failure" exception (An exception with the type /IWBEP/CX_MGW_BUSI_EXCEPTION occurred, but was neither handled locally, nor declared in a RAISING clause).</message>
<propertyref/>
<severity>error</severity>
</errordetail>
</errordetails>
</innererror>
</error>