Thanks Ali. IN.MSG.ROUTINE is being called at every request, I need the routine to be called only at the time of user sign on.

The following snippet makes the routine work when user logs in only

$INSERT I_COMMON
0007 $INSERT I_EQUATE
0008 $INSERT I_F.USER
0009 $INSERT I_BROWSER.TAGS
0010 $INSERT I_SECCTX.COMMON
0011 $INSERT I_TSS.COMMON
0012
0013 CALL OS.GET.TAG.VALUE(ACTUAL.REQUEST, C$SIGN.ON.TAG, USER.NAME )
0014 CALL OS.GET.TAG.VALUE(ACTUAL.REQUEST, C$REQUEST.TYPE.TAG, REQUEST.TYPE )
0015
0016 IF REQUEST.TYPE EQ "CREATE.SESSION" THEN

The last line is the condition only when some one logs in

I hope this helps
Regards
Ali