Verification and Requirements for Supplier Invoices

Before a supplier invoice can be paid, it must comply with a number of formal requirements. This page provides an overview.

Danish supplier invoices

All invoices from suppliers with a Danish CVR number must be sent electronically to DTU using an EAN number.

Invoices from Greenland are exempt and must be treated as foreign supplier invoices.

Invoice requirements

Before a supplier invoice can be approved and paid, the following information must be clearly stated:

  • Danmarks Tekniske Universitet
  • DTU's CVR number: 30060946
  • Department, centre or unit
  • Building number
  • EAN number
  • Requisitioner (the person who ordered the goods or services)
  • DTU Purchase Order (PO) number (if applicable)
  • Supplier name and CVR number
  • Supplier payment terms

Missing information may result in the invoice not being processed, which can delay payment.

Invoices received by email or post

DTU does not accept paper invoices from Danish suppliers.

Invoices received by email or post must therefore be returned to the supplier, as all invoices must be sent electronically using an EAN number.

According to Danish legislation, public institutions are entitled to withhold payment of supplier invoices that are not submitted in OIOUBL format. When a paper invoice is received, the supplier must therefore be informed that the invoice must be submitted in OIOUBL format.

Contact

Karina Sonne Alfastsen Finance and Accounting

OIOUBL is the Danish standard for electronic invoices sent to public authorities. Invoices in OIOUBL format can be processed automatically in financial systems and are therefore a legal requirement.

You can read more about electronic invoicing at virk.dk or oes.dk

Updated 18 maj 2026