TP39 is a standard SAP Table which is used to store Selection Variants data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The TP39 table consists of various fields, each holding specific information or linking keys about Selection Variants data available in SAP. These include SELVAR (Selection Variant for Total Commitment), CURRENCY_DEFAULT (Display Currency), RATE_TYPE (Exchange Rate Type), LAYOUT (Layout for a List)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .