get https://api-staging.b2brouter.net/tax_reports//download_response
[BETA] Download the Official Receipt of Acknowledgement received from the Tax Authority after successfully submitting a tax report.
This endpoint is primarily used for KSeF (Polish tax reporting system) to retrieve the official acknowledgement (UPO) from the tax authority. The UPO serves as proof that the invoice was successfully received and registered by the Polish Ministry of Finance.
Note: The UPO is only generated when the invoice is successfully accepted by KSeF. If the tax report is in error state, this endpoint will return the error reason from the tax authority.