Europol Public Information  2. Even where Europol authorises the  Contractor to sub-contract, the  Contractor is bound by all its  contractual obligations and is solely and exclusively liable for the performance of the  Framework  Contract  and any  Specific Contract  and/or  Purchase Order  under it.  3. Sub-contracting does not affect rights and guarantees to which Europol is entitled by virtue of the  Framework Contract . 4. Europol may request the  Contractor  to replace a sub-contractor found to be in a situation provided  for at Article II -22 (2) (“Termination”). 1. The  Contractor  shall not assign the rights and obligations arising from the  Framework Contract , in  whole or in part, without prior written authorisation from Europol. In order to enable Europol to  make an assessment with regard to the assignment, the  Contractor must provide Europol with  sufficiently detailed information with regard to the intended assignee and the extent of the  assignment.  2. In the absence of such authorisation, or in the event of failure to observe the terms thereof,  assignment by the  Contractor  of a right or obligation shall not be enforceable against and shall have  no effect on Europol.  1. The  Contractor  may suspend the performance of the  Framework Contract  and/or  Specific Contract or  Purchase Order  or any part thereof if a case  Force Majeure  makes such performance impossible  or excessively difficult. The  Contractor  shall notify Europol in writing about such suspension without  delay, giving all reasons and details and the envisaged date for resuming contractual performance. Once the circumstances allow performance to resume, the  Contractor shall inform Europol  immediately, unless Europol has already terminated the  Framework Contract and/or the  Specific  Contract  or  Purchase Order  in accordance with Article II-22 (“Termination”) below. 2. Europol may suspend the performance of the  Framework Contract and/or  Specific Contract or  Purchase Order  or any part thereof in the following cases:  i. if the underlying contract award procedure or the performance of the  Framework Contract and/or  Specific Contract or  Purchase Order prove to have been subject to  Substantial errors ,  Irregularities  or  Fraud ; ii. in order to verify whether presumed  Substantial errors ,  Irregularities or  Fraud have actually  occurred;  iii. for other reasons, which would, if established, make termination mandatory in accordance with the Financial Regulation 25 25  Regulation (EU, EURATOM) No 966/2012 on the financial rules applicable to the general budget of the Union, as  amended by Regulation (EU, EURATOM) 2015/1929 of the European Parliament and of the Council of 28 October  2015 at http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex:32012R0966; (or an equivalent provision in the  successor legislation)  Page 52 of 79  Europol’s initials:  Contractor’s initials:  Suspension  Article II-21  Assignment  Article II-20 