UTT Files - UEC

Universal Translate Table (UTT) files are used to translate between Unicode and the local single-byte code page.

Operating System	UTT File Location
z/OS	UTT files are members of the PDS allocated to the Broker ddname UNVNLS. codepage specifies the member name.
Windows	UTT files are located in the NLS subdirectory of the installation directory. codepage is the base file name of the UTT file.