SV: [ubl-psc] Rationalizing Related Document, Billing Document and Document Reference.

[Peter Larsen Borresen <plb@itst.dk>]

Dear all

We need to take a look at the document references at document level for
ReceipAdvice (and perhaps also more documents). Does it give a meaning on
document level to have 0..n reference to an order or an despatch advice.