RMSTS_DOC 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 "RMS-TLS: Document Key for Output" 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_RMSTS_DOC TYPE RMSTS_DOC.
The RMSTS_DOC table consists of various fields, each holding specific information or linking keys about RMS-TLS: Document Key for Output data available in SAP. These include DOKNR (Document number), DOKVR (Document Version), DOKTL (Document Part), APPNR (Application number)... 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. .