GRRM_S_PROBABILITY 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 "probablity details" 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_GRRM_S_PROBABILITY TYPE GRRM_S_PROBABILITY.
The GRRM_S_PROBABILITY table consists of various fields, each holding specific information or linking keys about probablity details data available in SAP. These include PROB_LEVEL (Probablity Level), TEXT (Probablity Description)... 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. .