3DS ReferenceProtocol & field guide

EMV 3-D Secure · Core specification 2.3.1.1

How to compare EMV 3DS versions

Use document comparison to inspect source changes, and field introduction tags to find additions recorded in the reference. They serve different purposes.

Compare source documents

Open Document coverage & compare in the explorer. Choose the available source documents using From and To, inspect the differences, and check the supporting source material. The coverage view identifies which documents are represented.

Open document coverage and comparison

Find introduction tags

The Changed in filter selects field or value introductions recorded by the publication. For example, you can inspect AReq additions tagged 2.2.0. It does not list every wording change or construct a complete 2.2.0 snapshot.

Check scope before using a historical result

The field pages use Core Specification 2.3.1.1 as their baseline. Review the version and context of each FAQ qualification separately. An absent introduction tag is not proof that a field or value existed unchanged in every earlier version.

For release status, official source documents and associated bulletins, consult EMVCo’s specification catalogue. Read our methodology and current coverage before relying on a comparison.