HI,  I have tried to reproduce the error and the only time i see this error when I try to do a TF between datadevs (I know you cant do that but to repro the error). Are you trying to do TF operation between datadevices? That's not possible..  Check the Symdev show of both source and target for device configuration:  C:\>symdev show 59d -sid 688 |more      Device Physical Name     : Not Visible      Device Symmetrix Name    : 059D    Device Serial ID         : N/A    Symmetrix ID             : 00019XXXXXXX      Number of RAID Groups    : 1      Attached BCV Device      : N/A      Attached VDEV TGT Device : N/A      Vendor ID                : EMC    Product ID               : SYMMETRIX    Product Revision         : 5874    Device WWN               : 6000097000XXXXXXXXXXXXXXXXXXXXXXXXXXX    Device Emulation Type    : FBA    Device Defined Label Type: N/A    Device Defined Label     : N/A    Device Sub System Id     : 0x0000    Cache Partition Name     : DEFAULT_PARTITION    Thin Pool Name           : Andy      Device Block Size        : 512      Device Capacity        {        Cylinders            :       2200        Tracks               :      33000        512-byte Blocks      :    4224000        MegaBytes            :       2063        KiloBytes            :    2112000        }      Device Configuration     : 2-Way Mir       (Data)   Thanks, Saurabh
when i am performing the TF/clone after executing the -precopy command i got the below error  The action cannot be performed because the specified device is a data device  can any one tell me what is the error tells me....   note: both source & target devices are thin devices
Error for TF/clone