Error: Some of the selected resources are not assigned to any site SCCM 2012

When installing SCCM 2012 client using Client Push method, you will receive

Error: Some of the selected resources are not assigned to any site

Errors:

Number of resources that are not in any site’s boundaries and will not be installed

Errors:

Some of the selected resources are not supported for client push installation

Reason for the error is; on Install configuration Manager Client wizard under Specify Client Push Options Install the client software from a specified site is not selected.

To resolve above error, select Install the client software from a specified site option.