FRMLS_API_AST 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: Formula Status" 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_AST TYPE FRMLS_API_AST.
The FRMLS_API_AST table consists of various fields, each holding specific information or linking keys about RMS-FRM: Formula Status data available in SAP. These include LINEMODE (Processing Status/Mode of a Record/Step Loop Line), STATUS (Status Information), STATUSCODE (RMS-FRM: Status Code), EXTHANDLE (Handle for API Client; Is Not Overwritten by API)... 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. .