RS_GET_TOKEN_TYPE_LONG_TEXT is a standard SAP function module that performs functionality. This is available within standard R/3 SAP systems depending on version and release level.
Below are the pattern details for this FM showing its interface including any import, export and tables parameters. There is also a list of Exceptions and for your convenience any standard documentation available. All this information and more can also be viewed if you enter the function module name RS_GET_TOKEN_TYPE_LONG_TEXT into the relevant SAP transaction such as SE37 or SE80.
CALL FUNCTION 'RS_GET_TOKEN_TYPE_LONG_TEXT' "
EXPORTING
p_type = " stokesx-type
IMPORTING
p_text = " string
. " RS_GET_TOKEN_TYPE_LONG_TEXT