Use the ICIClientSettings interface SetAllowXCRC method to allow a user to send the XCRC command to confirm transfers. Use the same method to prohibit the user from sending the XCRC command. Refer to User FTP Security Settings for an illustration of how this and other Client Settings Interface Methods and Properties can be accessed in the Administrator interface.
Signature:
HRESULT SetAllowXCRC([in] SFTPAdvBool val);
0 = Prohibit
1 = Allow
-2 = Inherit