Improve Error report in LCGUTIL-316 with an adapted message if the request code is in subtype (2)
Improve Error report in LCGUTIL-316 with an adapted message if the request code is in subtype (2)

EricKTCheung/davix,cern-it-sdc-id/davix,EricKTCheung/davix,cern-it-sdc-id/davix,cern-it-sdc-id/davix,cern-it-sdc-id/davix,EricKTCheung/davix,EricKTCheung/davix