XBRL Standards Board advances xBRL-CSV with table constraints release

Table Constraints is an extension to the xBRL-CSV specification that allows a number of basic validation checks to be performed very efficiently, by leveraging the tabular nature of the data.
This is part of the work that XBRL International is doing to expand the capabilities of the standard to simplify and expand granular data collection where there is a business need to collect very large volumes of fine-grained information.
Table Constraints builds on the existing xBRL-CSV format by introducing efficient, rule-based validation checks. These include column uniqueness constraints, enumerated value checks, and cross-table reference validations, all capabilities essential for scalable, high-integrity data collection.
Candidate Recommendation status signals that the specification is stable and ready for real-world implementation. It’s already generating interest among regulators aiming to streamline validation and ensure data quality at scale. Software developers are encouraged to implement the new features, run the conformance tests, and provide feedback to the Open Information Model Working Group to support its evolution.
You can explore the specification and conformance suite on the XBRL Specifications site here.