The compilers search for dependent files such as COBOL copybooks in the folders defined on the Dependency Paths tab of the Build Path page in the project’s properties (click Micro Focus > Build Path in the project’s properties). This tab enables you to include specific folders and also to control the search order.
If you have imported copybooks using a virtual folder in your project, you need to add them to the project's dependencies - navigate to Micro Focus > Build Path in the project's properties. On the Dependency Paths tab, check the copybook paths that correspond to the folders that include the imported copybooks, and then click OK.