Cannot able to find the plans in project area created based on the extracted process template.

Hello,

I am trying to create the project Area on an extracted process template from the other project area.

Project Created sucess fully with all process roles,configurations and timelines and except the plans.

ERROR:

  Planning can not be used because the Project Configuration is invalid. Check the details for further information.: Unable to resolve the planning attribute 'com.ibm.team.apt.attributes._com.ibm.team.apt.attribute.complexity' as work item attribute 'com.ibm.team.apt.attribute.complexity'.hide details 

How to fix this issue i am facing this problem in two more projects with custom attributes also.

Could anybody suggest me the solution for this.

Thank you In advance

Ashwath