I have received the following error while deploying ADF application as an EAR file.

weblogic.management.DeploymentException: The EAR file has no META-INF/application.xml and no modules could be found in it

Solution: 

1. Create a deployment profile of each ADF project, the profile type is WAR.

2. Create a deployment profile for the corresponding  ADF application, the profile type is EAR .

Check the created project deployment profile in Application assembly. Deployment works after this setup.