get the rfc destination from PI

Hi all,

We are using the standard function modul  'rfc_read_table' in PI , to get data of the table using an RCF call  . The table that we want to get its data, has the same name in SRM, ECC, and BI.

CALL FUNCTION 'RFC_READ_TABLE'
      DESTINATION ????

      EXPORTING
        query_table = 'Z_TABLE'

*       DELIMITER   = ' '
*       NO_DATA     = ' '
*       ROWSKIPS    = 0
*       ROWCOUNT    = 0
      TABLES
*       OPTIONS     =
*       FIELDS      =
        data        = wt_data.

The question is , how could we determine the destination ( is it ECC or Bi or SRM ) ??

Cordialy