MPLAN_NUMBERSWITCH 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 "Changed Number when Creating a 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_NUMBERSWITCH TYPE MPLAN_NUMBERSWITCH.
The MPLAN_NUMBERSWITCH table consists of various fields, each holding specific information or linking keys about Changed Number when Creating a Maintenance Plan data available in SAP. These include VALUE_OLD (Field of length 16), VALUE_NEW (Field of length 16)... 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. .