Sync/ Async Communication.
<a href="http://help.sap.com/saphelp_nw04/helpdata/en/c4/dc06418752ef6fe10000000a1550b0/frameset.htm">Sync/ Async Communication.</a>
Going through the above link, gives an intro about Sync/ Async Communication.
My question is
<u><b>Why are the main frame systems not able to process Sync calls?</b></u>
<b><u>Which other systems can not process Sync calls apart from main frame systems?</u></b>
Message was edited by: naveenkumar chitluri