Checkout is not disabled when "Unable to determine the taxing jurisdictions."

[vovarudakov]

Checkout is not disabled when the error "Unable to determine the taxing jurisdictions." received.

Preconditions

1. Magento 2.1.9
2. PHP 7.0.28
3. MySQL 5.7.21-20

Steps to reproduce

1. Go to admin panel: Stores->Configuration->Sales->Tax->Avatax Settings->Error handling Settings->Error action and set it to "Disable checkout & show error message" Here are full settings: https://www.awesomescreenshot.com/image/3322957/bdbaf2156af20a52fba2cffbec526a4d
2. Place an order using this shipping address: 159 fearer rd ext Friendsville, California, 21531 United States

Expected result

1. Checkout is disabled due to an error: "Unable to determine the taxing jurisdictions."

Actual result

1. Order is placed Looks like it happens because AvaTax does send a tax amount field 0. Here are logs: https://www.awesomescreenshot.com/image/3320782/8a0a62d53ed60378a67b47c8ce314868

[rsisco]

@vovarudakov94 - I've confirmed that the referenced configuration setting doesn't always stop checkout. I've opened an internal ticket to address this issue.

[rsisco]

@vovarudakov94 I just reviewed your screenshots again and looked deeper into my own reproduction of the issue and found the following:

• The log screenshot that you provided does not correspond with the address you provided. It also doesn't appear to be from the checkout step, since the destination address is empty except for state and zip, this is likely from the cart page.
• With the address you provided, AvaTax will likely not return an error. It will use the zip code to determine the taxable jurisdiction. Do have a log file you can provide that shows a request that results in "Unable to determine taxing jurisdictions."? The only way I can produce that error is with a completely fake zip code (e.g. 12345), and I am stopped from proceeding to checkout with the expected modal.

[rsisco]

@vovarudakov94 Are you able to provide me with the information I had previously requested?