v. Europol shall pay within the remainder of the time indicated above, unless it rejects the submitted documents partially or fully. Europol shall have the right to reject the invoice on the basis of Article II-11 (“ Reduction in payment and off-setting ”). 

7. Invoices for interim payment and/or payment of the balance shall be admissible only if compliant with the following conditions: 

(i) stating the reference number of the Framework Contract  and the applicable Specific Contract  or Purchase Order , and – as applicable – the details of the goods delivered and/or services performed. 

(ii) accompanied by the following supporting documents: 

- copy of the certificate of conformity (for goods delivered) or where applicable, the Delivery Note and/or Acceptance  (for services or Deliverables ), as applicable, 

- detailed justification of the price charged, including but not limited to print-out of Timesheets, if applicable, 

- list of Pre-existing IPR  or statement that there are none, if applicable 

- relevant progress report with reference to Tender Specifications if indicated in the relevant Specific Contract or Purchase Order . Europol shall have 30 (thirty) days from the receipt of the invoice to pay the balance. The Contractor  shall have 20 (twenty) days in which to submit additional information of a new final progress report if it is required by Europol. 

- statement of reimbursable expenses in accordance with Article II-10 (“Reimbursements”), Article I-10 (“Specific provision related to Reimbursement of expenses for travel and allowances expenses”) and I-11 (“Specific provision related to reimbursement of expenses for shipment of Goods”), if applicable. 

- as applicable for (temporary) storage of the Goods, the signed Warehouse Receipt, 

- A Purchase Order  or Specific Contract may stipulate additional conditions and/or evidence documents with regard to the payment, taking into account the specifics of the Services  to be performed or the characteristics of the Goods to be delivered by the Contractor . Europol may request the Contractor to provide a delivery planning together with a request for interim payment(s). 

- Any deduction for pre-financing amount(s) as referred to in paragraph 2 above, where applicable; 

- Any reference to any uplifts applied by the Contractor ; 

8. If the number of working hours agreed to in a particular Purchase Order  or Specific Contract  has not been fully taken up, Europol shall not be obliged either to use or to pay the hours not worked and the Contractor  shall not be entitled to claim payments and/or damages for them. 

9. Specific provision for payment of licence fees and maintenance: 

One-off licence fees shall be invoiced when the relevant Delivery Note, or, where applicable, the Certificate of Conformity has been signed. Yearly licence fees and maintenance fees may be invoiced per calendar year and paid in advance for the agreed period. The first invoice can cover the period from the date of signature of the Delivery Note, or, where applicable, the Certificate of Conformity of the software, or, as regards maintenance, from expiry of the guarantee, to the end of the current calendar year. In exceptional cases and subject to prior written approval from Europol, 

