Project limitations may influence how you manage your project and may even determine whether or not you (and your project’s drivers and supporters) decide to proceed with your project. Project limitations typically fall into several categories. By recognizing these categories, you can focus your investigations and thereby increase the chances that you’ll discover all limitations affecting your project. 

Your project’s drivers and supporters may have preset expectations or requirements in one or more of the following categories: 

Results: The products and effect of your project.  
Time frames: When you must produce certain results.  
Resources: The type, amount, and availability of resources to perform your project work.  
Activity performance: The strategies for performing different tasks