Some SAP servers need
to function as adapter gateway servers (or hubs). SAS calls this ABAP
function to extract performance data for the hub and for other SAP
servers. Multiple extractions can be channeled through a single hub,
which means that only one or two servers might need to function as
hubs.
Note: Each unique SAP release requires
a hub, because underlying data structures can change between releases.
Remote function calls between SAP instances that have different underlying
data structures can result in corrupt data.