FRMLS_API_XST 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-FRM: Scope of Application for Formula" 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_FRMLS_API_XST TYPE FRMLS_API_XST.
The FRMLS_API_XST table consists of various fields, each holding specific information or linking keys about RMS-FRM: Scope of Application for Formula data available in SAP. These include MANDT (Client), RECN (RMS-FRM: Object Identifier), RECNMST (Higher-Level Object Identifier), RECNROOT (Formula Header 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. .