Using Invoice for other document types?

["Joel Paula" <jp@scientia.pt>]

Documentation from CCI-UBL or the Portugueses public institution normative
for UBL, uses the Invoice document for other types of financial documents
(e.g.: credit notes, debit notes and orders), in spite of the available
CreditNote, DebitNote and Order.
Is this a perversion of UBL or is this customisation OK? It certainly makes
matters simple.

Thank you for your time.

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Joel Paula
Scientia - Anįlise e Desenvolvimento de Software, Lda.
:] www.scientia.pt [:
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