RFC_CALLBACK_WHITELIST_STATS 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 RFC_CALLBACK_WHITELIST_STATS into the relevant SAP transaction such as SE37 or SE80.
CALL FUNCTION 'RFC_CALLBACK_WHITELIST_STATS' "
EXPORTING
cbwl = " rfccbwhitelist_table
entry = " rfccbwhitelist
IMPORTING
occurrences = " int4
. " RFC_CALLBACK_WHITELIST_STATS