IPN notification missing/renamed parameters

[WayneEastaugh]

Hi,

In rare cases I'm getting IPN notifications with the parameters renamed. For example, rather receiving a message containing the expected parameter:

option_name1=<my value here>

instead I receive  a message with:

option_name1_1=<my value here>

And quite obvioulsy my code does not look for a parameter with the extra _1 on the end.

Why does this happen and can I get PayPal to retry the IPN notification with the correct parameter name?

Thanks!

[Elimosv]

I got the same problem. It only happens for one person (and happens every time for that person). When making a purchase, they get an odd identifier in lieu of my name.

[WayneEastaugh]

I've subsequently figured out that the transaction was being processed as "cart" rather than "web_accept". I changed my code to handle this. I have no idea why this is happening. I'm guessing it is something the user is doing when they get to the PayPal payments page.

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@Elimosv wrote:
I got the same problem. It only happens for one person (and happens every time for that person). When making a purchase, they get an odd identifier in lieu of my name.

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[nonickch]

We've been having this issue as well. It does not happen on a single client but happens randomly (?) to various ones.

Also started blindly checking for item_numer1, option_selection1_1, option_selection2_1. This fixed the problem, but the randomness of this is pretty troubling.

Just had a look at the dates and it seems we also run into this sometime in early July 2017.

[WayneEastaugh]

Thanks for your reply. I'm no closer to a resolution for this issue but will post any info here and on stackoverflow. Very frustrating as no code has changed at my end so it is quite obviously a change at PayPal and we're getting no assistance from them. For the moment I'll keep on checking for the additional fields but what else may change in the future? #frustrating