PayPal Express Checkout - 2012 Betriebsanweisung PDF herunterladen (Seite 64)

PayPal Name-Value Pair API Basics

Responding to an NVP Response

64 August 7, 2012 Express Checkout Integration Guide

Format of an Error Response

Additional pass-through information may appear in the L_ERRORPARAMIDn and

L_ERRORPARAMVALUE

n fields. Consider the following error response:

TIMESTAMP=2011%2d11%2d15T20%3a27%3a02Z&CORRELATIONID=5be53331d9700&ACK=Fail

ure&VERSION=78%2e0&BUILD=000000&L_ERRORCODE0=15005&L_SHORTMESSAGE0=Processo

r%20Decline&L_LONGMESSAGE0=This%20transaction%20cannot%20be%20processed%2e&

L_SEVERITYCODE0=Error&L_ERRORPARAMID0=ProcessorResponse&L_ERRORPARAMVALUE0=

0051&AMT=10%2e40&CURRENCYCODE=USD&AVSCODE=X&CVV2MATCH=M

In this case, the parameter ID is ProcessorResponse, which indicates an error response by

a credit or debit card processor. The value contains the processor-specific error. These values

are not set by PayPal; rather, they are passed through from the source.

NOTE: PayPal only passes selected values in the L_ERRORPARAMIDn and

L_ERRORPARAMVALUE

n fields.

URL Decoding

All responses to HTTP POST operations used by the PayPal NVP API must be decoded.

The PayPal NVP API uses the HTTP protocol to send requests and receive responses from a

PayPal API server. You must decode all data returned using the HTTP protocol so that it can

be displayed properly. Most programming languages provide a way to decode strings.

Related information:

"URL Encoding" on page 60

Response Fields on

Error

ACK=notSuccess&TIMESTAMP=date/timeOfResponse&

CORRELATIONID=

debuggingToken&VERSION=VersionNo&

BUILD=

buildNumber&L_ERRORCODE0=errorCode&

L_SHORTMESSAGE0=

shortMessage&

L_LONGMESSAGE0=

longMessage&

L_SEVERITYCODE0=

severityCode

Multiple errors can be

returned. Each set of

errors has a different

numeric suffix, starting

with 0 and incremented

by one for each error.

1 2 ... 59 60 61 62 63 64 65 66 67 68 69 ... 77 78

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