A story about the experience of the last communication with Sberbank on the issue of accepting payments on payment cards on the site when switching to a new fiscal data format and the mess that accompanies it.
I can not be silent, so impressed with their approach to the issue ...

A bit of background and background information:
')
As you know, for more than a year, our state of all those who accept payments from individuals, forces them to “write out” online checks (even when accepting payments by card).
This process may seem rather confusing.1. The site sends a request for payment processing to a payment provider (Yandex-cash, Sberbank, another bank or payment service)
2. In case of successful operation, the provider sends a request to form a check to the client’s online cash desk.
3. The online ticket office forms a check and sends it to one of the selected fiscal data operators (CRF)
4. The CRF stores information, sends an electronic check to the client and to the tax office.
In 2018, there are two versions of the fiscal data format: 1.0 (old) and 1.05 (new).
From January 1, 2019, all should switch to the new data format.
In the online checkout, this changes on the settings page (online).
Sites must pass two additional parameters for each item of the check (not difficult).
And, like, everything, but ...
Payments through the Yandex Cashier earned in the new format immediately and without problems, but the payment through the Sberbank payment service was successful, but the online check was never received (there is no check data in the CRF).
When contacting
Sberbank support service, a very friendly employee said that it was necessary to further change the version of the data format on their portal. But, as it turned out, these
settings are NOT PORTAL (from the word at all) .
The employee did not lose his head and immediately said that it was not in the “new” portal yet, you go to the “old” (by yourself removing the extra digits in the address) - and everything will be there, but this “trick” did not work out - the “old” portal just redirects to the "new". Well, nothing, you write to the support service and we will definitely decide everything ...

So, the “advanced” company two weeks before the universal transition to the new data format releases a new version of its portal, in which there are no settings for the version of the fiscal data format, without which, when making payments, the functionality of issuing online checks does not work (for lack of which, who accepts payments is fined).
upd:
The next day came the answer from the support service:
"Returned access to the old LC ... to change the version FFD."
The version was changed, but how to get the "missing" check for yesterday's operation, so no one answered ...