Hi Dhanalakshmi Sreerama,
Please, go to File -> Import in KDS (or right click in Project Explorer)
And compile first library (ksdk_platform_lib_K22F51212) and then project.
I hope this helps you,
Thank u for ur reply..I import the library file also shows same error
yes, I see your question.
Please do you have correctly installed KSDK into KDS?
The procedure is described here http://cache.freescale.com/files/microcontrollers/doc/user_guide/KDSUG.pdf?fsrch=1 page 62.
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