Failed to install Requested application

I really dont know what that means i got a output which gave me

Failed to install the requested application Code: 22 Failure Reason: The bundle identifier of the application could not be determined.

I dont know if this is the only thing holding me back right now but its the only thing stopping from me seeing my project in the simulator Any help would be great THANKS IN ADVANCED

Failed to install Requested application
 
 
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