Article ID: 126557, created on Aug 14, 2015, last review on May 27, 2016

  • Applies to:
  • Odin Business Automation Standard 4.5


If for some reason an IPN message about successful transaction from PayPal to OBAS gets resent by PayPal, OBAS responces to that second message with Internal Error 500 despite the first IPN message was correctly answered with OK 200.

As a result, PayPal retries the message again and again.

500 error logged in /var/log/hspcd/access_log: - - [27/Oct/2014:09:54:59 +0000] "POST /hspc/common/01/ref_no,2492.77806.188581-2014-10-27-23684cb68982441/template,paypalap/action,notify HTTP/1.1" 500 - "-" "-"


Starting with OBAS 4.5.6, OBAS replies with 200 on every IPN message about a successful transaction, no matter when the transaction actually took place.

To resolve the issue, please upgrade to 4.5.6 as described in How to upgrade OBAS system to the latest available version.

Search Words


500 Internal error

IPN message

624ca542e40215e6f1d39170d8e7ec75 caea8340e2d186a540518d08602aa065 400e18f6ede9f8be5575a475d2d6b0a6 70a5401e8b9354cd1d64d0346f2c4a3e

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