Information for suppliers

Electronic invoicing with our company takes place depending on which country the supplier comes from.

Czech suppliers

1. Invoicing via data boxes
   • The tax document must be in ISDOC or PDF format
   • ID of our data box: d79ch2h
   • No electronic signature required
   • The tax document must contain the order number/orderer's name on the O2 Czech Republic side
   • The tax document will not be sent simultaneously in another way
   • In the case of invoicing in ISDOC format, it is necessary to perform testing via our test data box
   • Information about data boxes
   • Information about the ISDOC invoice format
   • Specifications for setting the ISDOC format
2. Invoicing to e-mail box efaktury@o2.cz
   • The tax document must be in PDF format
   • The tax document must be provided with a guaranteed electronic signature based on a qualified certificate, alternatively a qualified electronic seal
   • The tax document must contain the order number/orderer's name on the O2 Czech Republic side
   • Attachments to tax documents are part of the email
   • The tax document will not be sent simultaneously in another way

Foreign supplier

• Invoicing to email box: invoices@o2.cz
• The tax document must be in PDF format
• No electronic signature required
• The tax document must contain the order number/orderer's name on the O2 Czech Republic side
• Attachments to tax documents are part of the email
• The tax document will not be sent simultaneously in another way

If these conditions are not met, we are forced to return the e-mail message delivered this way and it will be considered undelivered. If the attachments are directly part of the tax document (i.e. in one file), it is possible to send multiple tax documents in one email. In the opposite case (i.e., the attachment is a separate file), sending the tax document with the attachment in a separate email is necessary. If the supplier has any problem with the tax document, he can contact the Accounts Payable at 800 177 247, email zavazky@o2.cz