546. The uniqueness of a derivative until the application the draft RTS on reporting is ensured at the level of the combination of LEI1-LEI2-UTI. It should be noted that TRs use this unique combination to incorporate any modification or the termination to the derivative.

547. From the date of application of the revised technical standards on reporting under EMIR the uniqueness of derivatives concluded after that date should be ensured at the level of the UTI, i.e. there should not be two same UTIs, no matter the combination of counterparties. From that dateonwards, TRs should therefore use:

a. the triplet (LEI1-LEI2-UTI) to update the state of the derivatives concluded prior to the application date of the draft RTS on reporting

b. the UTI to update the state of derivatives concluded after the application date of the draft RTS on reporting

548. In any case, counterparties and TRs should be reminded the requirement included in Article 8 of the draft ITS on reporting as the only way for reporting counterparties and ERRs to update the two LEIs.

549. Counterparties should not amend fields "Reporting timestamp" and "Action type" of previous submissions and TRs should not accept any such submissions. This should not be understood though as impossibility to submit different reporting timestamps.