One-Page Checkout [Support Thread]

[TitanOwl]

Hi there,

We have a new issue with OPC, the total order showing in Zen Cart after payment more than what it is actually requested from Payment Gateway.
In other word, the Zen Cart total shows $43.67 as total amount charged to customer but the Payment Gateway has received the value of $39.52 to be captured.
This issue does not happen all the time and it is totally random, the difference is in actual shipping cost, for this example the shipping cost for USPS priority was $15.78 but what it is requested to gateway was $11.63.

Please advise.

Ok, we figured out the issue, and it is about available shipping options, OPC picks the first option and disregards the customer selection, in this case customer picked the second option of shipping which was USPS priority at $15.78, but OPC disregard that and picked the first option which was USPS first class at $11.63, please advise how to fix this issue and OPC picks the customer selected shipping option for calculation of total.

thank you.

[TitanOwl]

Ok, we figured out the issue, and it is about available shipping options, OPC picks the first option and disregards the customer selection, in this case customer picked the second option of shipping which was USPS priority at $15.78, but OPC disregard that and picked the first option which was USPS first class at $11.63, please advise how to fix this issue and OPC picks the customer selected shipping option for calculation of total.

thank you.

I resolved the issue with changing the "Payment-Block Action on Shipping Change" in Admin->Configuration->OPC to "refresh" from update , now it works, sorry about creating this post, but I am still wondering what would the difference between update and refresh!