jordi fita mas 5cae0efe8f Fix validation of product ID for invoice products that have none
For some reason, i assumed that if the invoice product has and ID, that
is it comes from the database, it must also have a product ID, which is
incorrect, because we allow invoice lines with products not added to the
product relation.

I am using zero to mean “no product ID”, so now that validation has to
include the zero as well.
2023-05-22 11:16:21 +02:00
..
2023-05-15 12:38:40 +02:00
2023-01-17 10:40:22 +01:00
2023-01-22 20:37:34 +01:00