Creating an XML upload on a customized Bitrix?

Question

1C-Bitrix

Peculiarities.
The site has a customized loading of product availability. as a result, data on the quantity of availability is entered in the usual window "product properties".
It is necessary to make an unloading with a frequency of three times a day in XML format to a specific folder, the unloading should contain data on availability from different warehouses.
How much time (real time "hours") can this task take?
PS:
Bitrix already has built-in mechanisms for generating xml files for Yandex Market, maybe you should use this tool?

Answer 1

Do you need to unload the catalog, only that the rest would be taken not from the rest, but from a certain property?
From scratch - 5-10 hours depending on the required fields in the upload and other tasks (such as working on the crown or not and whether it differs greatly from the standard XML)
If the upload is ready (for example, we already have it, we modified the regular xml at one time, but the list of fields may not converge from the word at all), then add a field to it - well, an hour maximum.

Answer 2

XML is just a format, it would be more detailed about what kind of data is expected in the upload.