I am getting this error when i am deploying my metadata components using Force.com IDE.
Can't Specify the external Sharing Model for Account
So how can i resolve this problem?
Check that the sharing model org wide defaults are the same in your source and target orgs. By default it's set to private sharing model. The developer may have set it to a public sharing model and you'd need to do that through Setup UI in the new org you want to deploy to.