Changing some 500 HTTP status codes to 422

We have noticed that some of our validations for orders, invoices, vouchers and credit notes are returning a HTTP status code of 500 instead of 422. This is a bug that will be addressed.

Status Quo:
Some validation errors return a HTTP status code of 500.

Future:
All validation errors will return a HTTP status code of 422.

Affected endpoints: All PUT / POST endpoints of orders, invoices, vouchers and credit notes.

Release: 13.06.2024 (4.181)