Issue on compiling the code.

Issue on compiling the code.https://devzone.nordicsemi.com/f/nordic-q-a/8375/issue-on-compiling-the-codehello I am using nRF51822 microcontroller and KIELuvision5 for programming, I am new to this platform kindly need your help, I was compiling the basic code it toggles an LED here is my code. It shows an error it say D:\Keil_v5\ARM\PACK\NordicSemiconductoren-USTelligent Community 13Sat, 25 Jul 2015 18:47:23 GMTRE: Issue on compiling the code.https://devzone.nordicsemi.com/thread/30383?ContentTypeID=1Sat, 25 Jul 2015 18:47:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:544db28c-2914-4429-9199-785ec11ce468Tony Lee<p>You search "Board is not defined" on the whole project, you can find that you haven't define the target board part no (eg. BOARD_PCA10028, BOARD_PCA10001...etc)</p><div style="clear:both;"></div>