In SE80 in a client that you can run the transaction in, set a break-point in the class "CL_BADI_FLT_DATA_TRANS_AND_DB"...
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in the method "ACT_IMPS_PER_FLT_VAL" just after the "SELECT" headed by the comment "read BADI attributes".
Run the transaction.
At each break-point in the debugger, examine the fields "exit_name" and "internal".
The name of the BADI is in "exit_name" and the BADI is reserved for SAP use if "internal" has a value of "X".