The RESO UOI solves issues related to inconsistent identification of organizations, improving data accuracy and interoperability.More Info on Unique Organization Identifier (UOI)
The RESO Unique Organization Identifier (UOI) records the source of data in shared data sets of rosters, listings and sales, improving accuracy and reducing false duplicates.More Info on RESO Unique Organization Identifier...
The RESO UPI is used in the U.S. and Canada, with more countries developing their capabilities to implement the standard.More Info on Universal Property Identifier (UPI)
The RESO UPI globally identifies property in a way that adds accuracy to property records and reduces deduplication obstacles for data aggregators and consumers.More Info on Universal Property Identifier (UPI)
The RESO UPI eliminates confusion and duplication that exists in real estate records with mismatched addresses and duplicated parcel numbers across geographies.More Info on Universal Property Identifier (UPI)
The RESO Universal Parcel Identifier (UPI) is a model for accurately identifying properties using parcel recording structures within a global framework.In the U.S., it is a way to communicate parcel numbers unambiguously without collisions of similar identifiers...
RESO Unique Identifiers ensure accurate identification of people, properties and organizations in real estate data. They include the Universal Parcel Identifier (UPI), Unique Organization Identifier (UOI) and Unique Licensee Identifier (ULI).More Info on RESO Unique...
Have your technical provider email dev@reso.org. If your organization is not yet a member and would like to access free certification, email membership@reso.org.More Info on Certification
RCF can be used by any participant in real estate technology: brokerages, reporting and analytics vendors, digital tour and media companies, showing services, association management systems, and more.More Info on RESO Common...
The format supports any range of real estate data, including standard and unique local property details, transaction information, appraisal, tours, assessment, showings, media,and member records.More Info on RESO Common...
Not all real estate entities use the Web API, but they all have technology products that receive data. RCF ensures that data can be easily shared and understood across various platforms, reducing errors, improving efficiency and enabling new products, integrations and...
RESO Common Format (RCF) is an API-agnostic standardized format for data exchange by all parties in the real estate industry, ensuring consistency and interoperability. RCF is a normative JSON data format that corresponds with the RESO Data Dictionary and is...
The Data Dictionary specification includes validation rules that are enforced to ensure that data entries meet specified criteria, such as value ranges or formats, maintaining data quality and integrity.More Info on Data...
The Lookup Resource defines the values for lookups (enumerations) in metadata. It contains predefined lists of acceptable values for specific fields and alternative mappings for deprecated items. The Lookup Resource is not currently mandatory for certification, but it...
New fields are added to the Data Dictionary year-round and often ratified annually in new versions of the standard to support evolving industry needs.More Info on Data Dictionary
Contributors include technologists and business leaders from MLSs, REALTOR® associations, brokerages and vendors. Proposals can be submitted to RESO staff and the Data Dictionary Workgroup at dd@reso.org.More Info on Data...
RESO provides a standard for delivering multi-language metadata in the Data Dictionary, and it has been extended to other languages in several countries.More Info on Data Dictionary
Implementation of the entire Data Dictionary is not expected or required for certification. The dictionary standard’s omissibility feature allows data providers to only use the elements relevant to their specific needs.More Info on Extensibility & Omissibility in...
The Data Dictionary’s extensibility feature means that data providers can create new local fields to address specific needs that are not currently covered by the Data Dictionary and still be in compliance with the standard for certification.Although providers...
Extensibility with the Data Dictionary means data providers can create new local fields to address specific needs that are not currently covered by the Data Dictionary and still be in compliance with the standard.Providers may extend the Data Dictionary with custom...
The Data Dictionary Wiki provides detailed information on data resources, fields and lookups (aka enumerations), guiding the development of data systems. It has extensive cross-links to guide users through the connected layers of the dictionary.More Info on Data...
Benefits include simplified integrations, faster creation of new tools, a seal of approval from RESO certification and enhanced industry innovations, competition and collaboration.More Info on Data Dictionary
The current Data Dictionary can be accessed via the DD 2.0 Wiki at ddwiki.reso.org. It can also be downloaded in spreadsheet format.More Info on Data Dictionary Wiki
Lookups are specific types of fields with options for values, such as the lookup field Fencing with lookup values for Vinyl, Wood, Wrought Iron and 26 other lookups.More Info on Data Dictionary
