{"id":1498,"slug":"reso-dd-2-0-architecture-41-resources-1745-fields-3683-lookups","title":"RESO Data Dictionary 2.0 — 41 resources / 1,745 fields / 3,683 lookups (ratified Oct 23 2023; effective April 15 2024)","kind":"reference","scope":"business","status":"current","audiences":["kevin","candid-team"],"topics":["real-estate-mls","reso-data-dictionary"],"reference_body":"**Claim.** RESO Data Dictionary 2.0 contains exactly 41 resources and 1,745 total fields. The home index lists DD 2.0 as \"Approved October 23, 2023 · 41 Resources · 1,745 Fields · 3,683 Lookups,\" with an effective ratification date of April 15, 2024 for certification testing.\n\n**Quote.**\n> \"DD 2.0 contains 41 resources and 1,745 total fields.\"\n\n**Source.** RESO browsable Data Dictionary (dd.reso.org/DD2.0/about/resources/; dd.reso.org home index; reso.org/product-updates), accessed 2026-06-21.\n\n**Confidence.** Verified. Standards-body primary source.\n\n**Caveats.** RESO's marketing page (reso.org/data-dictionary) says \"more than 1,700 fields and 3,100 lookups\" — rounded, non-version-specific, and should NOT be cited as the DD 2.0 lookup count. Use 1,745 / 3,683 / 41 resources for DD 2.0; flag the marketing figure as imprecise.\n\n**Implication / use.** The headline architectural figure for the MLS field inventory. Anchors the \"1,745 fields the typical agent never touches\" narrative in Section 2.","rationale_body":null,"metadata":null,"links":{"outgoing":[{"slug":"research-brief-mls-data-inside-the-box-ontario-june-2026","title":"Research notes (capture-layer): inside the MLS box — what an Ontario member agent's account exposes, what goes unused, and what they're licensed to do with it (June 2026)","kind":"research-notes","scope":"business","link_type":"depends-on"}],"incoming":[{"slug":"research-brief-mls-data-inside-the-box-ontario-june-2026","title":"Research notes (capture-layer): inside the MLS box — what an Ontario member agent's account exposes, what goes unused, and what they're licensed to do with it (June 2026)","kind":"research-notes","scope":"business","link_type":"relates-to"},{"slug":"reso-dd-2-0-property-resource-652-fields-groups","title":"RESO DD 2.0 — Property resource is 652 fields, organised into 13 groups","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"reso-dd-2-0-full-resource-field-counts-list","title":"RESO DD 2.0 — full resource list with field counts (Property 652, Contacts 91, Member 87, Office 73, …, TransactionManagement 4)","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"reso-dd-2-1-draft-44-resources-2167-fields-q1-2026","title":"RESO DD 2.1 — draft (44 resources / 2,167 fields / 4,140 lookups), targeted end of Q1 2026, not yet ratified","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"reso-marketing-1700-fields-rounded-imprecise","title":"RESO marketing \"more than 1,700 fields / 3,100 lookups\" — rounded, non-version-specific (flag)","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"typical-agent-uses-sliver-of-1745-fields","title":"Typical agent uses a sliver of the 1,745-field MLS dataset — active search, a handful of comps for a CMA, posting their own listing","kind":"reference","scope":"business","link_type":"relates-to"}]},"created_at":"2026-06-21T10:45:32.809Z","updated_at":"2026-06-21T10:45:32.809Z"}