SDK name PluginsSDK not installed?

Question

I am using Liferay 6.2 + Tomcat 7.0 to build a web application using portlets.

Now, when I want to work for some other project (creating a web service), whenever I create a dynamic web project using the Eclipse IDE, I get an error -

The SDK name of this PluginsSDK project is not set. 

I tried downloading a new copy of Tomcat 7.0 and pointed to a new project, still getting the same error.

Can anyone ask what I'm missing here?

EDIT :

I do not get the project validation option in eclipse:

Answer 1

This is a bug in the Liferay IDE plugin.

If your project is not Liferay Plugin, it shows the same error

It can help you. Click here.

This issue was resolved in the latest version of the Liferay IDE.

Answer 2

Disable verification: Window → Settings: