E-invoicing

The e-invoicing addresses and operator for S Group companies change on November 25, 2025.

The updated e-invoicing addresses can be found here: S Group e-invoice addresses In an e-invoicing address is specified in the RECEIVER/NET_SERVICE_ID field of a TeappsXML 3.0 format or in the MessageReceiverDetails/ToIdentifier field of a Finvoice 3.0 format. Electronic invoices bring cost savings for the sender and the recipient, as they reduce the number of work phases and make the processing of invoices easier and more efficient. We request that you comply with the new act on electronic invoicing (241/2019) in your invoicing practices. In accordance with the new act, S-Group companies prefer to accept e-invoices, and the data content must comply with the EN16931 standard.For more information about what the new e-invoicing legislation requires from your invoices, please refer to your e-invoicing operator.The table below provides more information on what information to enter into which field on the electronic invoice.

Reference	Teapps3.0	Finvoice3.0
Contract number	HEADER/CONTRACT_INFORMATION/CONTRACT_NUMBER	AgreementIdentifier
Order number	HEADER/ORDER_INFORMATION[@ORDER_TYPE="CO"] [1] /ORDER_NUMBER	OrderIdentifier
The name of your SOK contact person or person who placed the order	RECEIVER/CUSTOMER_INFORMATION/CONTACT_INFORMATION/CONTACT_PERSON	BuyerContactPersonName
Other requested reference information, such as brand or project name	HEADER/ORDER_INFORMATION[@ORDER_TYPE="CO"] [1] /ORDER_REFERENCE	BuyerReferenceIdentifier

Invoices sent by some other company than the one that received the order, such as a financing company If you send your invoices via some other company than the one that received our order, the electronic invoice must still include your company’s name in the Invoicer/Supplier details (Teapps: Payee element, Finvoice SellerPartyDetails). Information on the company through which the invoice is sent, such as a financing company, is entered in the Other partner details. However, the number of the bank account to which the payment should be made must be included in the invoicer/supplier details (Teapps: PAYEE/BANKS/IBAN_ACCOUNT_NUMBER and Finvoice: SellerAccountID)S Group e-invoice operatorS Group uses Tieto Oyj as its e-invoice operator. Tieto Oyj's operator code is 003701011385.