MPLAN_ILOA 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 "ILOA for Maintenance Plan" 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_MPLAN_ILOA TYPE MPLAN_ILOA.
The MPLAN_ILOA table consists of various fields, each holding specific information or linking keys about ILOA for Maintenance Plan data available in SAP. These include MANDT (Client), ILOAN (Location and account assignment for technical object), TPLNR (Functional Location), ABCKZ (ABC indicator for technical object)... 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. .