Unless otherwise stated in the specific scenario, the following background information applies to all scenarios set out in Part II:

Investment Firm X (LEI: 12345678901234567890) is a member or participant of Trading Venue M.

Investment Firm Y (LEI: ABCDEFGHIJKLMNOPQRST) is also a member or participant of Trading Venue M.

Trading Venue M’s segment MIC is ‘XMIC’.

Trading Venue M has a gateway-to-gateway latency time of less than 1 millisecond. The ISIN of the financial instrument is: XX0000000000

 The order identification code is: 123456789ABC

The order book code at the Trading Venue M is: XYZ9876

Trading Venue M’s generated Trading venue transaction identification code is: ABC123456

In addition, all fields in the table of fields of Commission Delegated Regulation (EU) 2017/580 are mandatory. Fields should only be left blank when not relevant for the specific event. For example, Field 14 Priority size is not relevant for a price time priority order book and would not be expected to populate. The business cases only focus on the fields for which a clarification is needed. Irrespective of technical schema in which the data is provided (e.g. XML, CSV etc.), if a given field can be left blank the information should be provided in a way that allows CAs to identify that that field has been left blank.