Hi can anyone please tell me how to rectify this error

Hi can anyone please tell me how to rectify this error

ERROR:MapLib:30 - LOC constraint J17 on topsegF is invalid: No such site on the
   device. To bypass this error set the environment variable 'XIL_MAP_LOCWARN'.
ERROR:MapLib:30 - LOC constraint H14 on topsegG is invalid: No such site on the
   device. To bypass this error set the environment variable 'XIL_MAP_LOCWARN'.
ERROR:MapLib:30 - LOC constraint F17 on topselDispA is invalid: No such site on
   the device. To bypass this error set the environment variable
   'XIL_MAP_LOCWARN'.
ERROR:MapLib:30 - LOC constraint H17 on topselDispB is invalid: No such site on
   the device. To bypass this error set the environment variable
   'XIL_MAP_LOCWARN'.
ERROR:MapLib:30 - LOC constraint C18 on topselDispC is invalid: No such site on
   the device. To bypass this error set the environment variable
   'XIL_MAP_LOCWARN'.
ERROR:MapLib:30 - LOC constraint F15 on topselDispD is invalid: No such site on
   the device. To bypass this error set the environment variable
   'XIL_MAP_LOCWARN'.

Shanmukharao Muddada wrote:

> Hi can anyone please tell me how to rectify this error
> 
> ERROR:MapLib:30 - LOC constraint J17 on topsegF is invalid: No such site
> on the
>    device. To bypass this error set the environment variable
>    'XIL_MAP_LOCWARN'.
> ERROR:MapLib:30 - LOC constraint H14 on topsegG is invalid: No such site
> on the
>    device. To bypass this error set the environment variable
>    'XIL_MAP_LOCWARN'.
> ERROR:MapLib:30 - LOC constraint F17 on topselDispA is invalid: No such
> site on
>    the device. To bypass this error set the environment variable
>    'XIL_MAP_LOCWARN'.
> ERROR:MapLib:30 - LOC constraint H17 on topselDispB is invalid: No such
> site on
>    the device. To bypass this error set the environment variable
>    'XIL_MAP_LOCWARN'.
> ERROR:MapLib:30 - LOC constraint C18 on topselDispC is invalid: No such
> site on
>    the device. To bypass this error set the environment variable
>    'XIL_MAP_LOCWARN'.
> ERROR:MapLib:30 - LOC constraint F15 on topselDispD is invalid: No such
> site on
>    the device. To bypass this error set the environment variable
>    'XIL_MAP_LOCWARN'.
Your UCF file is aparently assigning signals to package pins that are not 
available on that specific device.

Jon