Payment identifier - unique identifier of the buyer at the seller (for example, reference number, apartment number).

Length of payment identifier - minimum/maximum length of allowed combination of numbers or letters.

Check sequence of the payment identifier - usually an additional number used for the reference number. A more detailed explanation and calculator can be found HERE.

Parallel Preferences - Maximum number of channels to transmit a single bill.

NB! Please write in the notes whether you have a Swedbank e-invoice contract. If so, then please add the contract number.