What is the purpose of the test deploy of the invoicing features? (early access)

The purpose of the test period is:

1. verification by users of the usefulness of the available functionality in their daily work with bookings(is the functionality offered sufficient, what is missing?),

2. assessment of the stability and reliability of the new module (are there any errors?),

3. assessment of the compatibility of functionality with respect to various tax systems (does the system support tax systems such as: VAT, GST, Sales tax, etc.?),

4. collecting comments and suggestions of users in order to improve the available functions (what can we do better?).