Why has the Linkpoint Payment module stopped working all of a sudden?

[mhaggag]

Zen-Cart ver 1.3.8a
Initial installation, no upgrade since initial installation.
I use the Linkpoint gateway to process credit card payments in my store.
Everything was working just fine up until about 3 weeks ago.
I did NOT make any changes anywhere, did not even add any new products.
All of a sudden, all credit card payments at checkout fail with the error "Your card has been declined. Please re-enter your card information, try another card, or contact the store owner for assistance."
So I tested with my own cc, same error, knowing that there's no reason for the transaction to be declined (cc has limit available, billing address is correct etc...).
When I checked with National Merchant (my cc processor), they confirmed they have NO record of any transactions processed/declined.
Because I have Linkpoint DEBUG enabled, I receive email notifications whenevr a transaction is processed in my store.
Here's the email I received:
Response Code:

Sending to Gateway:
result = LIVE
oid = 3-il4QSk
ip = 168.xx.47.xxx
ponumber =
subtotal = 3
tax = 0
shipping = f
chargetotal = 3
cardnumber = ******
cardexpmonth = 12
cardexpyear = 12
cvmindicator = provided
cvmvalue = ******
userid = 5
customerid = 5
name = <name withheld>
company =
address1 =
address2 =
city =
state =
country =
phone = <withheld>
email = <withheld>
addrnum =
zip =
sname =
saddress1 =
saddress2 =
scity =
sstate =
szip =
scountry =
comments = Website Order
items = Array
(
[0] => Array
(
[id] => 12
[description] => UK Plug Adapter
[quantity] => 2
[price] => 1.50
)

)

ordertype = SALE
host = secure.linkpt.net
port = 1129
keyfile =
/home/howtoen1/public_html/ianphone.com/shop/includes/modules/payment/linkpoint_api/<withheld>.pem
configfile = <withheld>
transactionorigin = ECI
terminaltype = UNSPECIFIED


Result:
(
[r_csp] =>
[r_time] =>
[r_ref] =>
[r_error] => SGS-020003: Invalid XML
[r_ordernum] =>
[r_message] =>
[r_code] =>
[r_tdate] =>
[r_score] =>
[r_authresponse] =>
[r_approved] =>
[r_avs] =>
)


Hmmm... I wonder what " [r_error] => SGS-020003: Invalid XML"
means!

Help anyone?!! thanks!

[mhaggag]

Update:
Well...
I went back and created a new order and it went through this time.
I received the DEBUG email as usual and the only difference I see is that address info is present this time.

Response Code: APPROVED
Sending to Gateway:
result = LIVE
oid = 3-Q4d9jh
ip = <withheld>
ponumber =
subtotal = 59
tax = 0
shipping = 7.12
chargetotal = 66.12
cardnumber = ******
cardexpmonth = 12
cardexpyear = 12
cvmindicator = provided
cvmvalue = ******
userid = 5
customerid = 5
name = <withheld>
company =
address1 = 336 36th Street
address2 = Unit 126
city = <withheld>
state = Washington
country = US
phone = <withheld>
email = <withheld>
addrnum = 336 36th Street
zip = <withheld>
sname = <withheld>
saddress1 = 336 36th Street
saddress2 = Unit 126
scity = <withheld>
sstate = Washington
szip = <withheld>
scountry = US
comments = Website Order
items = Array
(
[0] => Array
(
[id] => 11
[description] => i9+++ iPhone Clone Dual SIM, Quad Band,
MP3/MP4/FM Camera
[quantity] => 1
[price] => 59.00
)
)
ordertype = SALE
host = secure.linkpt.net
port = 1129
keyfile =
/home/howtoen1/public_html/ianphone.com/shop/includes/modules/payment/linkpoint_api/<withheld>.pem
configfile = <withheld>
transactionorigin = ECI
terminaltype = UNSPECIFIED

Result:
(
[r_csp] => CSI
[r_time] => Fri Apr 16 05:24:11 2010
[r_ref] => 0659119224
[r_error] =>
[r_ordernum] => 3-Q4d9jh
[r_message] => APPROVED
[r_code] => 1825410659119224:YYYM:
[r_tdate] => 1271409850
[r_score] =>
[r_authresponse] => X07
[r_approved] => APPROVED
[r_avs] => YYYM
)

So...
While I am relieved toknow it really works... I am wondering why it did not work the first time.
I am using the USPS shipping module, which automatically calculates shipping cost using the USPS gateway (don't know if that has anything to do aith anything).
The other difference I see is that the first item (that did not go through) does not require shipping (FREE shipping).
So, is it possible that "FREE shipping" items cause this problem?

[DrByte]

I recommend installing the updated Linkpoint module for your 1.3.8 site: http://www.zen-cart.com/forum/showth...490#post563490

And all the recommended other patches as well: http://www.zen-cart.com/forum/announcement.php?f=2&a=14

[mhaggag]

OK Many thanks! The patch for Linkpoint specifically mentions it fixes a problem with FREE shipping.