Basic document matching process
from a received order, you create a proforma invoice via realization https://www.flexibee.eu/api/dokumentace/ref/realizace-objednavky/
2. the proforma invoice needs to be settled using payment matching https://www.flexibee.eu/api/dokumentace/ref/parovani-plateb/
if the payment is credited to the account with a delay, it is necessary to create a separate account for the payment gateway and record the payment confirmation
3. use the settled proforma invoice to create a final issued invoice
4. to match the final issued invoice, use the advance deduction https://www.flexibee.eu/api/dokumentace/ref/odpocet-zaloh/