If you are trying to process a transaction against the “live” Chase Paymentech payment gateway and get the following response code back:
9717 Security Information – agent/chain/merchant is missing
the problem is that the IP address being used by your server, is not in the merchant approved IP address list with Chase Paymentech.
You, or the approved merchant contact will need to call Chase Paymentech Gateway support at 1-866-645-1314 and have them update their firewall. Once you have done this, wait 60-70 minutes then re-test your transaction. Should work like a charm.