COND_MNT_TABPOS 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 "Condition Maintenance: Describes Item in Internal Table" 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_COND_MNT_TABPOS TYPE COND_MNT_TABPOS.
The COND_MNT_TABPOS table consists of various fields, each holding specific information or linking keys about Condition Maintenance: Describes Item in Internal Table data available in SAP. These include FIELDNAME (Field Name), TABINDEX (Row Index of Internal Tables)... 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. .