Dear customer,
OP has announced changes to its banking network's invoicing standard, which will take effect in Autumn 2024. The aim of these changes is to ensure the uniformity and technical compatibility of invoicing information.
BuyerPartyIdentifierElement: BuyerPartyIdentifier is an optional field, but if it is included in the invoice material sent to OP’s banking network, it cannot be empty and must contain at least 6 characters.
ISO-8859-15 Standard: The content of the invoices must be correctly encoded according to the ISO-8859-15 standard (not, for example, UTF-8). Using only the encoding declaration (<?xml version="1.0" encoding="ISO-8859-15"?>) will no longer suffice in the future. While the encoding requirement applies to all Finvoice invoices, OP will actively start checking for compliance with these requirements in its own billing network.
For more information on the changes and detailed instructions on applying them, please visit OP's software provider notice: https://www.op.fi/yritykset/tietoa-ohjelmistotoimittajille/laskutus
We recommend updating your software and Finvoice billing material to meet the new Finvoice requirements set by OP, regarding both the BuyerPartyIdentifier element and the ISO-8859-15 standard. Please note that the requirement for the content of the BuyerPartyIdentifier element is a specification of OP and does not apply to other invoicing routes at the moment.
Although the ISO-8859-15 character set check will focus on invoices moving through the OP banking network, it is advisable to follow these guidelines in all future Finvoice invoicing traffic (Finvoice Implementation Guidelines, 9.3 Character set used in Finvoice messages). This will ensure smooth compatibility in case the requirements for handling the standard are more widely adopted across the operator and banking network.
If you or your customers are not operating in Finland or use the Finvoice standard, you can disregard this message.
If you need further information or support, please contact our support at support@maventa.com or our support request form.
Kind regards,
Maventa Customer Care