ESMA published new information on 20 June 2018 regarding the LEI requirements under MiFIR. The publication confirms that the last day for the temporary period that was brought-in in December 2017 to allow for a smooth introduction of the LEI requirements will be 2 July 2018.
This means that reports filed with a transaction date after 2 July will undergo validation that the transaction date falls on the same date or later than the initial registration date for the client's LEI code. The document is available on ESMA's website and can be reached through the following link: ESMA statement on LEI requirements under MiFIR.