PAR54 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 "Item structure for SIJP list - Version 33" 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_PAR54 TYPE PAR54.
The PAR54 table consists of various fields, each holding specific information or linking keys about Item structure for SIJP list - Version 33 data available in SAP. These include BUKRS (Company Code), BUTXT (Name of Company Code or Company), REGIS (Eight-digit numeric value), PERNR (Personnel 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. .