About a-team Marketing Services
The knowledge platform for the financial technology industry

A-Team Insight Blogs

Final ESMA Report on MiFID II and MiFIR Technical Standards Recommends XML and ISO 20022 for Regulatory Data Reporting

Subscribe to our newsletter

The European Securities and Markets Authority (ESMA) has published its final report on Regulatory Technical Standards (RTS) for Markets in Financial Instruments II (MiFID II) and Markets in Financial Instruments Regulation (MiFIR). The report covers many aspects of the directive and regulation, and concludes debate over market data reporting, recommending that transaction and instrument reference data should be reported under MiFIR in a common XML format in accordance with ISO 20022 methodology.

The final report on technical standards for MiFID II and MiFIR was published this week, along with final reports on technical standards for Market Abuse Regulation (MAR) and the Central Securities Depositories Regulation (CSDR). The reports have been sent to the European Commission, which has three months to approve them ahead of MAR entering into force in 2016 and MiFID II and MiFIR in 2017. CSDR entered into force back in 2014.

The final report on MiFID II and MiFIR, includes rules that will bring the majority of non-equity products into a robust regulatory regime and move a significant part of over the counter trading onto regulated platforms. Key rules aim to introduce fairer, safer and more efficient markets, greater transparency and stronger investor protection through improved disclosure.

The regulatory reporting requirement has been the subject of great debate over past months, with respondents to the latest ESMA public consultation considering the implementation challenges of formats including FpML, ISO 20022, TREM (a custom XML format defined by ESMA and used for transaction reporting and instrument reference data exchange between competent authorities), IFX, FIX and XBRL.

The formats perceived by respondents to be least challenging and preferred are ISO 20022 and FpML. A study by ESMA to assess which format is best for transaction and reference data reporting concluded that ISO 20022 is most suitable, leading ESMA to state in the report: “Having considered the feedback to the consultation paper, as well as results of the study, ESMA has decided that transactions and instrument reference data should be reported under MiFIR in a common XML format and in accordance with ISO 20022 methodology.”

ISO 20022 is the ISO-approved standardisation methodology for financial messages and data sets. It is syntax-independent, but includes a set of XML design rules to convert message models into XML schemas whenever the use of the ISO 20022 XML-based syntax is preferred. The ISO standard has also been selected for post-trade transparency reports, aligning these with the format used for reference data, but in this case concerning only the way information is represented, for example the same codes are used to represent the same value, and not how data is collected or published.

Subscribe to our newsletter

Related content

WEBINAR

Upcoming Webinar: Executing the Migration to Cloud to Enable Scalability and Innovation

Date: 22 September 2026 Time: 10:00am ET / 3:00pm London / 4:00pm CET Duration: 50 minutes Cloud-based services and processing have become essential to financial institutions as their data management demands have become more complex and expansive. Thousands of organisations have made the jump from their limited on-premises tech stacks to the near-infinite scalability opportunities...

BLOG

Celebrating Excellence at the TradingTech Insight Awards Europe 2026

The pace of change across trading technology shows no sign of slowing. As markets become more complex, data-intensive and performance-driven, firms are rethinking how infrastructure, analytics and execution workflows interconnect across the trading lifecycle. Against this backdrop, the TradingTech Insight Awards Europe 2026 brought the industry together to recognise the solution providers delivering measurable impact...

EVENT

Eagle Alpha Alternative Data Conference, Fall, New York, hosted by A-Team Group

Now in its 8th year, the Eagle Alpha Alternative Data Conference managed by A-Team Group, is the premier content forum and networking event for investment firms and hedge funds.

GUIDE

AI in Capital Markets Handbook 2026

AI adoption in capital markets has moved into a more disciplined phase. The priority is now controlled deployment: where AI can be used safely, where it can deliver measurable value, and how outputs can be governed, monitored and evidenced. The 2026 edition of the AI in Capital Markets Handbook examines how AI is being applied...