Article 55
1. Amounts wrongly paid shall be recovered. 2. The accounting officer shall act on recovery orders for amounts receivable duly established by the authorising officer or authorising officer responsible. He/she shall exercise due diligence to ensure that Europol receives its revenue and shall see that its rights are safeguarded. 3. Where the authorising officer responsible is planning to waive or partially waive recovery of an established amount receivable, he/she shall ensure that the waiver is in order and complies with the principle of sound financial management and proportionality. Such a waiver shall be by a duly substantiated decision of the authorising officer. The authorising officer may delegate such a decision only for amounts receivable of less than EUR 5 000. The waiver decision shall state what action has been taken to secure recovery and the points of law and fact on which it is based. 4. The authorising officer responsible shall cancel an established amount receivable when the discovery of a mistake as to a point of law or fact reveals that the amount had not been correctly established. Such cancellation shall be by decision of the authorising officer responsible and shall be suitably substantiated. 5. The authorising officer responsible shall adjust the amount of an established debt upwards or downwards when the discovery of a factual error entails the alteration of the amount of the debt, provided that this correction does not involve the loss of the established entitlement of Europol. Such an adjustment shall be by decision of the authorising officer responsible and shall be suitably substantiated.