The KSeF URL is the direct system address used by applications to retrieve the structured invoice (XML) stored in the Polish National e-Invoicing System (KSeF).
It is constructed using the KSeF ID assigned to the invoice after it has been successfully submitted and accepted by the system.
invoic_Examples
<property name="ksefUrl">https://ksef.mf.gov.pl/api/online/Invoice/Get/KSeF-2026-02-01-1234-ABCDEF0123456789</property>
invoic_XPATH
/b24Message/invoice/property[@name="ksefUrl"]
invoic_Required
No
invoic_Type
Text
invoic_Limits
None
invoic_Sort
9911