When an EPL file in your project depends on an external EPL file, you must explicitly specify the dependency. For example, if you refer to event types or actions that are defined in other EPL files, you must specify the files that define those constructs. This ensures that Apama Studio includes the external file in the validated project. It also ensures that the Apama Studio builder, content assistance facility, and launcher have access to the most up-to-date version of each required file.

How you define dependencies depends on whether you are the only one using your project or you share the project with one or more users.