CKMD_MLIT 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 "Structure MLIT for the Display of Material Ledger Document" 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_CKMD_MLIT TYPE CKMD_MLIT.
The CKMD_MLIT table consists of various fields, each holding specific information or linking keys about Structure MLIT for the Display of Material Ledger Document data available in SAP. These include MANDT (Client), BELNR (Number of a Material Ledger Document/Price Change Document), KJAHR (Material Ledger Document/Price Change Document: Storage Year), POSNR (Item in Material Ledger Document)... 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. .