User Guides and Manuals
Find detailed information about TransUnion data formats and transaction processing standards.
TU4.0 User Guide (. pdf )
Last Updated: 11/30/2018
The TU4.0 User Guide describes the fixed-format inquiry (FFI) and fixed-format response (FFR) that are used in TU Release 4.0 Version 1 (TU4.0).
TU4.1 User Guide (. pdf )
Last Updated: 11/30/2018
The TU4.1 User Guide describes the fixed-format inquiry (FFI) and fixed-format response (FFR) that are used in TU Release 4.0 Version 1 (TU4.1).
TUXML User Guide (. pdf )
Last Updated: 11/30/2018
The TUXML User Guide describes how to use TUXML, TransUnion's XML schema, to request and receive applicable TransUnion services.
TUXML schema 2.25 (.xsd)
This is the most current TUXML schema. No upgrade is required for current subscribers using existing services.
TUXML schema 2.25 (.xsd)
This is the most current TUXML schema. No upgrade is required for current subscribers using existing services.
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