To debug applications and services you need to run them on an enterprise server which has the Dynamic Debugging option set. This option enables you to debug services from within your COBOL development environment, while the services are running on a local or remote enterprise server. This requires no changes to your program code.
When you debug a project with Dynamic Debugging enabled, you can specify the items to debug. For example, you can specify that you want to debug instances of a given transaction.
Before you can debug services, you need to prepare. You need to configure the enterprise server, deploy your service and make sure that both the enterprise server and your development environment are set up appropriately.