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The working group has agreed that the overarching principles are that:

  • Peppol (and the A-NZ invoice specification) business terms (semantic data model) are used as defined.
  • When the seller (corner 1, or C1) has the data, it should be provided in the invoice. 
  • When the buyer (corner 4, or C4) has been provided with the required information on the invoice, they should endeavour to 'search for' required information and process the invoice where possible. 

Ratings for 'Optional' Business Terms

The group has reviewed  the optional 'business terms' (which may include one or multiple Peppol invoice elements) and rated them based on 'priorities'. The working group has agreed upon the following priority 'ratings':

B - Best Practice Required by buyers and are vital to enable automatic invoice processing, If they are not provided, the invoice is highly likely to be rejected or payment will be delayed. 
G - Good Practice These will assist the buyer with quicker / straight forward processing (e.g. facilitate 3-way matching or vendor verification) however, they are not commonly required for automation. 

Note: some of the information in this group may only be applicable in certain circumstances (e.g. GTIN identifiers are used for goods, but not services). In some circumstances, some information in this group may be required and/or mandatory for various business and/or legal reasons (such as auditing or tax compliance).
O - Optional This group is in support of sellers including rich business information where they can, however:
  • Buyers are not expected to be able to process all this information automatically; or
  • Some of this information may only be relevant in 'niche' circumstances, e.g. hazardous goods identification.

Note: a business term may include multiple corresponding UBL elements. The full list of Peppol fields, including ratings for optional fields, can be found in the appendix of the best practice guide.The guide can be accessed here.