CKI_A31_ML 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 "Currency fields from CKI_AB1_ML with _3" 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_CKI_A31_ML TYPE CKI_A31_ML.
The CKI_A31_ML table consists of various fields, each holding specific information or linking keys about Currency fields from CKI_AB1_ML with _3 data available in SAP. These include ZUABW_3D (Receipts: Single-level price differences), ZUUMB_3D (Revaluation Amount), VNPRD_3D (1-Level Price Differences from Issues not Affecting the Pric), VPPRD_3D (Other receipts/issues: Single-level price differences)... 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. .