Feature error with eclipse plugin

I am getting error with my feature.xml. It is version 1.2 not available. The screenshot is shown below.

But version开发者_C百科 1.2 is available.

The problem is likely that your version number is invalid. Eclipse expects that there are 3 or 4 components to a version number: major.minor.micro.qualifier (and qualifier is optional).

You should change 1.2 to 1.2.0 in both the plugin and the feature. Optionally, you can change the feature to have 0.0.0. In this case, the feature will always sync with the latest version of the plugin.