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RESO Standards Reference

The RESO Data Dictionary — the national standard every modern MLS feed speaks. Standard resources & fields, with the legacy MLS names they replace. This is the target the Feed Field Mapper maps to.

RESO standard fieldTypeLegacy MLS names (examples)PURE canonical
RESO certification means an MLS exposes data using these exact field names via the Web API. PURE ingests RESO-shaped feeds natively and maps legacy/non-standard feeds to these via the Feed Field Mapper, then to the PURE canonical schema (Data Dictionary).