iphone: unable to deploy app on iphone

Question

I have downloaded the certificate from developer portal, downloaded provisioning profile organizer is showing provisioning profiles I have provisioning profile installed on my device as well

but when I am trying to change change the developer profile then getting this error

"The name (“common name”) of a valid code-signing certificate in a keychain within your keychain path. A missing or invalid certificate will cause a build error. [CODE_SIGN_IDENTITY]"