Forbid orders with negative totals sum

Saving proposals (aka estimates) / orders / delivery notes with a negative total will result in a validation exception. This is necessary so that the resulting invoices can be booked correctly.

Status Quo:
Proposals (aka estimates) / orders / delivery notes with a negative total are valid.

Future:
Proposals (aka estimates) / orders / delivery notes with a negative total are invalid.

Affected endpoint:

• /api/v1/Order/Factory/saveOrder

Release: 14.11.2023 (4.167)