T459S is a standard SAP Table which is used to store Period splitting data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The T459S table consists of various fields, each holding specific information or linking keys about Period splitting data available in SAP. These include PRASTA (Period split), PTEXTE (Period split description), TAGEA (Number of weeks (split in daily quantities)), WOCHEA (Number of weeks (split into weekly quantities))... 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. .