PCA_BUMAT 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 "Company Codes for Transfer of Material Stocks" 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_PCA_BUMAT TYPE PCA_BUMAT.
The PCA_BUMAT table consists of various fields, each holding specific information or linking keys about Company Codes for Transfer of Material Stocks data available in SAP. These include BUTXT (Name of Company Code or Company), LFMON (Current period (posting period)), LFGJA (Fiscal Year of Current Period), VMMON (Month of previous period)... 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. .