PP EC errors 10413 and 10426 same sale

[RixStix]

Quite a few error files.

The line items and totals appear correct in the first file that shows a 10413 error
2nd file in the progression shows the sales tax being removed.
3rd file in the progression shows success but sales tax has been removed.
4th file much longer and has the notice regarding PP wacky math.

Total presented for payment on my paypal page shows the invoice total without sales tax.

Click OK for payment on PP website.
Upon transfer back to the ZC confirmation page, big RED banner indicating 10426 error.

I can attach the 4 debug files after I sanitize identifiable information.

I have edited the files frank18 indicated in THIS THREAD
https://www.zen-cart.com/showthread.php?209786-Shopping-cart-Subtotal-not-equal-Checkout-Subtotal-%28rounding-error%29/page2

Same error files generated before and after that change.
I have generated 3-4 dozen files today.

[RixStix]

PayPal myDEBUG files

This seems to be occurring much more frequently than in the past. One customer caused 2 dozen PayPal files to be generated earlier today before getting fed up and used a credit card. In the past, the error occurred but payment was processed after the DEBUG mentioning having to fix PP fuzzy math.

I duplicated that order and PP files are duplicated every time.

Should have said
ZC 1.5.4 upgraded from 1.5.3 etal

[RixStix]

So many debug files that my eyes feel like they're swimming with the bugs.

From what I can see, ZenCart is removing the sales tax (zeroing it) from the data being transmitted to PP. So it does stand to reason that the 10426 error because the totals do not match is an accurate error. That seems to occur with any order quantity if the purchaser lives in a taxable location.

Possibly a second issue is that 10413 error occurs when a quantity of 0.5 units is in the cart. No other quantity (that I have found) causes the error.

[DrByte]

ZC first attempts the actual data, but then if it's rejected because of some line-item reason, it attempts to recalc by stuffing tax into a single line item instead of specifying it as tax. If that fails it falls back to submitting everything as a lump purchase price w/o line item details. It's all to mitigate against obscure complications caused by fractional quantities and fractional tax rates.

[RixStix]

When I finally get to a PP screen, the order total does not contain the tax amount. Thus, the total PP is presenting me does not match the ZC order total which is seems to make the 10426 error legitimate because the tax is not included anywhere within the total sent to PP.

Now that does not explain a non-taxable customer receiving the 10426 error. But that can be reproduced when 0.5 unit are in the cart. No other quantity, that I've found, will reproduce the error.

I keep generating the same logfiles hoping for a different result but that is not happening. I have seen the dbug files reference PP fuzzy math before but until recently never have seen it prevent the order from completing. Probably because the orders were not taxable.

[DrByte]

Perhaps this may help your fractional-quantities issue? https://github.com/zencart/zencart/pull/500/files

[RixStix]

For some reason, the fractional quantity issue for only 0.5 units that I have been able to recreate since a customer generated 23 logfiles yesterday, can no longer be recreated. This has been between my last post and this one. The only edits that I have made were those mentioned in frank18 post and those edits made no difference yesterday.

It was for only 0.5 units. 0.3, 0.4, 0.6, 0.7, 0.8, 0.9 or 1.5 units would not cause a PP issue with checkout totals.

I will still implement those edits. TNX Dr Byte.

Now, if only the removal of the sales tax can be remedied. From what you said, ZC does remove the sales tax but is supposed to add it back somewhere so that the Payment amount within the PP payment page equals the order total on the ZC side. I cannot find it being added back into the total being transmitted to PP.

I'm open to any suggestions.

[RixStix]

Perhaps this may help your fractional-quantities issue? https://github.com/zencart/zencart/pull/500/files

YES. Thank you. The issue with Sales Tax also disappeared after making those edits.

Have some coffee and donuts on me.... TNX again.

[DrByte]

Perhaps this may help your fractional-quantities issue? https://github.com/zencart/zencart/pull/500/files

YES. Thank you. The issue with Sales Tax also disappeared after making those edits.

Whew !