PLPHCAP is a standard SAP Structure so does not store data like a database table does. It can be used to define the fields of other actual tables or to process "Additional fields for CAPP in PLPH" Information within sap ABAP programs. This is done by declaring abap internal tables, work areas or database tables based on this Structure. These can then be used to store and process the required data appropriately. i.e. DATA: wa_PLPHCAP TYPE PLPHCAP.
The PLPHCAP table consists of various fields, each holding specific information or linking keys about Additional fields for CAPP in PLPH data available in SAP. These include TXGEN (Indicator: text generation), VTXVH (Process text for text generation exists), KTEX1 (Description), METNR (External method number)... 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. .