10525 This transaction cannot be processed. The amount to be charged is zero.

[oomlus]

I have installed v1.3.8a and have Paypal Express Checkout.

I keep getting the "10525 This transaction cannot be processed. The amount to be charged is zero."

I believe the shipping rate/tax is screwing something up.
I am using Table Rate "100:18.18,50000:0". I use 18.18 + 10%GST = Flat shipping fee of $20.

All invoice numbers on checkout page are all correct.

However when I look at the Paypal Action logs I see the following;

Jul-30-2010 08:39:47
getLineItemDetails 7
checking subtotals...
itemamt: 18.36
taxamt:
shippingamt: 22.00
handlingamt: 0.36
-------------------
subtotal: 40.72
AMT: 40.00
-------------------
difference: -0.72 (abs+rounded: 0.72)


Why has shippingamt become 22.00?? I believe this is where it's breaking..

Has anyone solved/encountered this before?? Pls help - thanks.

[oomlus]

Found this link, post #57 http://www.zen-cart.com/forum/showth...521#post774521, and it fixed my problem.

[DrByte]

You should also be upgrading to the latest version. Yours is very old.