MHIS_CD 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 "Preventive Maintenance Plan History (Change Documents)" 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_MHIS_CD TYPE MHIS_CD.
The MHIS_CD table consists of various fields, each holding specific information or linking keys about Preventive Maintenance Plan History (Change Documents) data available in SAP. These include WARPL (Maintenance Plan), ABNUM (Maintenance plan call number), ZAEHL (Maintenance Package Number), NPLDA (Next planned date)... 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. .