While delivering transaction lines only existing invoices shall be updated.

It checks if invoice is consistent.

It is get from Trade Model Line.

Provide configuration to generate taxes and discounts.
Sort paths and links.

TypeError: unsupported operand type(s) for ** or pow(): 'int' and 'dict'

There was a try to do True^kw

Analyze one transaction per transaction.

Apply on vifib/tax trade phase too.

They are in posted to stopped state, so test users' balance is 0.

When no payment is available yet, inform that payment information are being
prepared.

When payment is already sent to payzen but still not confirmed, inform about it.

When initial payment is done show order button.

Visible only if there is planned Payment Transaction available for user.