Ok, now I am really posting here as a LAST RESORT to hopefully get this stuff working at last. This is the worst documented API I have ever tried to use, other payment solutions took me 1-2 hours to implement and then maybe another hour of testing. This PayPal Website Payments Pro has now cost me more than a WEEK in programming work and the frustration is still very prevalent! Here is the problem: Yes, everything is installed, all API files and certificates in the right places, account and sandbox account set up correctly and, YES - IT WORKS, with my own VISA card in the sandbox. And it also works with my own MasterCard, BUT NOT WITH THE MASTERCARD OF A CUSTOMER. I finally figured out how to somewhat parse the results of the $response = $this->caller->DoDirectPayment($ddp); call. Never in any of the examples provided with the API nor in any examples I have found from the developers they even touch the results!! They just do the call and completely ignore or just dump the result for fun and then skip to the order confirmation page! But what happens if an ERROR occurs? To catch errors, I parse the result to find if $response->Ack is set, and if it's set to "success" then everything is OK. And I can immediately see the "money" in my sandbox appear, get the IPN and everything is fine. But when I use my customer's credit card I get no response at all!! Just an empty string! After searching in the API code for a while I found the right positions in the code to tap into and inserted a little "log-dumping" of the data that is transferred to and the response read back from paypal. I now can see the completely assembled XML stuff going out and a HTTP/1.1 200 OK message followed by the response XML. In the case of my customer's card I get an embarassing (for paypal!!) HTTP/1.1 500 Internal Server Error along with some XML where basically some string is a faultcode and it is "Internal Error" !!!! GREAT !! How explanatory! Especially since I can use ANY Name/Address I want and get a perfectly fine transaction with MY MasterCard. Now i do NOTHING BUT CHANGE THE CARD NO. the EXP DATE and th CVV2 CODE and BANG! Internal Error !!! Does anyone know WHY? Did anyone encounter the same thing? Btw. I double checked and triple checked the outgoing XML and am 120% sure that everything is according to the (very poor) documentation of the "integration guide" https://www.paypal.com/e...Pro_IntegrationGuide.pdf I have already read some other threads about some countries not being supported and PayPal admitting that 25% of all credit card transactions fail. is it time to get an account with a REAL crdit card processor or can this be fixed??? Thanks a lot and please excuse my writing. English is not my mother language and meanwhile I am *VERY* annoyed by the bad documentation, long phone support hold times (usually ~45 min !!!!!) and unhelpful phone support regarding this issue ! Here's a piece of actual response log: ----------------------------------- Paypal Response Aug 19 2005 17:47:52 HTTP/1.1 500 Internal Server Error Date: Fri, 19 Aug 2005 22:47:52 GMT Server: Apache/1.3.27 (Unix) mod_ssl/2.8.12 OpenSSL/0.9.7a PHP/4.3.2 Connection: close Content-Length: 1325 Content-Type: text/xml; charset=utf-8 <?xml version="1.0" encoding="UTF-8"?><SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:cc="urn:ebay:apis:CoreComponentTypes" xmlns:wsu="http://schemas.xmlsoap.org/ws/2002/07/utility" xmlns:saml="urn:oasis:names:tc:SAML:1.0:assertion" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:wsse="http://schemas.xmlsoap.org/ws/2002/12/secext" xmlns:ebl="urn:ebay:apis:eBLBaseComponents" xmlns:ns="urn:ebay:api:PayPalAPI"><SOAP-ENV:Header><Security xmlns="http://schemas.xmlsoap.org/ws/2002/12/secext" xsi:type="wsse:SecurityType"></Security><RequesterCredentials xmlns="urn:ebay:api:PayPalAPI" xsi:type="ebl:CustomSecurityHeaderType"><Credentials xmlns="urn:ebay:apis:eBLBaseComponents" xsi:type="ebl:UserIdPasswordType"><Username xsi:type="xs:string">xxxxxxx_api1.wilhelmy-it.com</Username><Password xsi:type="xs:string">xxxxxxxxxx</Password></Credentials></RequesterCredentials></SOAP-ENV:Header><SOAP-ENV:Body id="_0"><SOAP-ENV:Fault><faultcode>SOAP-ENV:Server</faultcode><faultstring>Internal error</faultstring><detail>Unknown</detail></SOAP-ENV:Fault></SOAP-ENV:Body></SOAP-ENV:Envelope> ----------------------------------- Stefan Wilhelmy General Manager Wilhelmy-IT Inc.

I've been working with PayPal about that one for a few weeks now. What they told me is that these Internal Errors were for cards that fail AVS and/or some PayPal's fraud prevention checks.
Basically, you get that error for CCs PayPal wont process.
On any given day we get those in about 15 - 25% of transactions we try to process.

Still no help available? Where are the PayPal Techs ?


Stefan Wilhelmy
General Manager
Wilhelmy-IT Inc.