overlaps the location of another project in zend studio?

I do not know, How to add the same project in the workspace with same name.

I have setup a project in zend studio. I have setup a workspace xyz. There I added two projects of php.

projectA and projectB

then because of some issue, I removed project by by deleting from workspace xyz.

Then I try to add a fresh copy of projectB into my workspace xyz but zend studio is giving error and not adding the same project.

error was coming: overlaps the location of another project 

You are trying to add the projectB from the same location. just copy projectB complete folder to another location and then add it into zend studio workspace. For example:

You have projectB in location: c:\projectB
You should move it to D drive - d:\projectB

then try to add projectB into zend studio workspace, everything will be fixed.