From 3a6afb2857792965f388511c3c893569ec0190d8 Mon Sep 17 00:00:00 2001 From: Evan McMahon Date: Tue, 9 Oct 2018 21:01:32 +1100 Subject: [PATCH] Update testing instructions --- README.md | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/README.md b/README.md index d0e9e86..c8110a7 100644 --- a/README.md +++ b/README.md @@ -22,7 +22,10 @@ a response string with "VERIFIED" or "INVALID". * IPN Listener script samples are provided for different languages. * Deploy IPN Listener script in a cloud environment or you can expose your server port using any third party local tunneling software, so that you can receive PayPal IPN callback. -* You can test your software using the [PayPal IPN Simulator](https://developer.paypal.com/developer/ipnSimulator/). Ensure your listener is validating the sandbox messages at the correct testing endpoint. + +### Testing with the sandbox +Please note that calls from the [PayPal IPN Simulator](https://developer.paypal.com/developer/ipnSimulator/) cannot be validated. +You must [create a PayPal sandbox account](https://developer.paypal.com/developer/accounts/). IPN calls from the sandbox after a test transaction is performed will be validated providing you set your IPN validation endpoint to the sandbox URL. ## License