In the retail industry, a TLOG is the Point of Sale (POS) Transaction Log.
The TLOG is a complete, detailed record of everything that occurs at the POS terminal, including events that are not directly related to a sales transaction. Typically, the precise TLOG record format is unique to a given POS application, but the majority of formats are based on a tagged/delimited string format called Raw TLOG.
Raw TLOG messages can be modeled using the MRM Tagged/Delimited String Format (TDS).
If you are working with TLOG messages you can specify whether fields in the messages are in character format or in a format that is specific to the message. This requires that the Messaging Standard property (at the message set level) is set to TLOG, and relevant objects that have this non-character based field in the TDS message have their Physical Type property set to TLOG Specific.
Predefined message set solutions for TLOG can be purchased from IBM.