When the terminal transmits an attribute certificate issuance request message in response to this message, {HEAD ~ the terminal} transmits {TAIL ~ an attribute certificate issuance message} to the terminal  
transmits
When the terminal transmits an attribute certificate issuance request message in response to this message , { HEAD ~ the terminal } transmits { TAIL ~ an attribute certificate issuance message } to the terminal
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH