alphagov/trade-tariff-backend — pull request #54 by sauliusg (2013-01-16 12:59:26+00:00)
Title: Present order_number: { } as Hash on Measure.

It used to have two presentations, as string - when it had no definition
and as Hash & String when with definition.

Order numbers may have no definition. In that case users are advised to contact Rural Payments Agency.