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Version: 0.2 Draft 3

Namespace: x-mifid2:

Markets in Financial Instruments Directive II​

Jurisdiction: European Union and United Kingdom Frameworks addressed: Directive 2014/65/EU (MiFID II); Regulation (EU) No 600/2014 (MiFIR); UK retained-law implementation through FSMA and FCA rules. Registration tier: Open Review status: ai_reviewed Review date: 2026-03-20

Fields​

FieldTypeRequiredDescription
x-mifid2:instrument_data_flagbooleanOPTIONALSet to true where data relates to financial instrument transactions subject to MiFID II/MiFIR transaction reporting obligations under Article 26 MiFIR.
x-mifid2:communications_recording_flagbooleanOPTIONALSet to true where data constitutes a recorded telephone conversation or electronic communication under MiFID II Article 16(7). Note: Article 16(7) covers communications intended to result in a transaction, even if no transaction is ultimately concluded.
x-mifid2:intended_to_result_in_transaction_flagbooleanOPTIONALSet to true where a communication falls within Article 16(7) because it was intended to result in a transaction.
x-mifid2:retention_periodstring (ISO 8601 duration)OPTIONALThe applicable MiFID II retention period. Standard minimum: P5Y. Extended on competent authority request: up to P7Y. Note: five years is the standard minimum under Article 16(7); seven years applies on specific competent authority request.
x-mifid2:transaction_report_flagbooleanOPTIONALSet to true where data has been or is required to be reported under MiFIR Article 26 transaction reporting obligations.
x-mifid2:best_execution_flagbooleanOPTIONALSet to true where data is required for best execution monitoring and reporting under MiFID II Article 27.
x-mifid2:order_record_flagbooleanOPTIONALSet to true where data forms part of required order or decision records under MiFID II recordkeeping obligations.
x-mifid2:algorithmic_trading_record_flagbooleanOPTIONALSet to true where data falls within algorithmic trading governance and recordkeeping requirements.
x-mifid2:client_categoryenumOPTIONALMiFID II client categorisation. Permitted values: retail_client, professional_client, eligible_counterparty. Note: categorisation drives applicable protection regime and can change through elective opt-up or opt-down processes.

Revision notes​

  • communications_recording_flag description updated: Article 16(7) covers communications intended to result in a transaction.
  • intended_to_result_in_transaction_flag added.
  • retention_period description clarified: five years standard; seven years on competent authority request.
  • order_record_flag and algorithmic_trading_record_flag added.
  • client_category note updated on opt-up/opt-down processes.

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