MISMO Publishes Updated Engineering Guidelines
September 3, 2025
WASHINGTON, D.C. (September 3, 2025) – MISMO®, the real estate finance industry's standards organization, today announced the publication of updated MISMO Engineering Guidelines (MEGs).
“MISMO maintains a series of guidelines to govern the development of MISMO standards and collateral work products,” said MISMO Acting President Rick Hill. “MEGs ensure that MISMO work products adhere to all applicable technology standards, are produced in a consistent fashion, and meet the needs of the mortgage industry.”
The MEG updates include:
MEG 0002: XML 1.0 Profile
- Removed the summary table and redundant content
- Improved rationale, grammar, and formatting
MEG 0004: Schema Language Recommendations
- Updated terminology related to MEG requirements
- Changed the MEG title from "Schema Language Recommendation" to better reflect its content
MEG 0005: Unicode and Internationalization
- Updated formatting
- Replaced outdated terms and conditions with the current disclaimer, licensing, and copyright
- Improved terminology and added more detailed explanations
- Replaced the “assumptions” section with document status
MEG 0007: Class Words and Definition Guidelines
- Added templates for definitions and improved formatting
- Clarified content of Class Word “Type”
- Combined content from MEG 0040 for a more streamlined approach
- Changed the MEG title from “Class Words” to better reflect its content
- Note: MEG 0040 (Data Point and Container Definition Guidelines) will be deprecated as its content is now part of MEG 0007
MEG 0025: Extending a Standard MISMO XML Schema
- Updated section 25.8 with additional guidance for implementing enumerated values.