Events Booking - Field [ITEM_NAME] - where does data come from?

We have made a change to to EB top provide more data in our Stripe Payment Checkout
We have modified Translation Field EB_EVENT_REGISTRATION
It now has the fields 
[FIRST_NAME] [LAST_NAME] - [EVENT_TITLE] [EVENT_DATE_DATE] [EVENT_DATE_TIME] Registration
Using this means we have this in the Description field in Stripe and it works fine (see screen shot)
When we send our invoices we include a field [ITEM_NAME] (see screen shot)
When we produce the invoice [ITEM_NAME] gives the following
"David Unwin - 7am Lane Swim [EVENT_DATE_DATE] [EVENT_DATE_TIME] Registration" 
So it looks like [ITEM_NAME]  picks up [FIRST_NAME] [LAST_NAME] - [EVENT_TITLE]
from EB_EVENT_REGISTRATION field but it can't translate  [EVENT_DATE_DATE] and [EVENT_DATE_TIME]
So my question is: Does [ITEM_NAME] pick up EB_EVENT_REGISTRATION or does it get data from other fields??
There is no indication in the documentation
eventbookingdoc.joomservices.com/basic-s.../invoice-integration
Kind regards
David

In invoice, [ITEM_NAME] still uses EB_EVENT_REGISTRATION. However, it only support several tags there:

- [EVENT_TITLE]
- [EVENT_DATE]
- [FIRST_NAME]
- [LAST_NAME]
- [REGISTRANT_ID]

Regards,

Tuan

Hi Tuan,
Thanks for the clarification. That is useful to know.
Kind regards
David

You're welcome !

Tuan