JDeveloper 11g Error: IllegalStateException in o.i.explorer.IconOverLayTracker$NodeWatcher:802]

Uncheck below  option in Tools –> Preferences –> Versioning –> General

1. Use Navigator State Overly Icons - Uncheck

2. Use Navigator State Overly Labels – Uncheck

Setting Title for Mediator

Follow the below step:

1. Add the Expression using Assign activity in the .mplan file.

   Open the Assign Values field editor by clicking the button after the ‘Assign Values’ field. 

   The ‘Assign Value’ editor appears.

   Mediator the return value of the ‘setCompositeInstanceTitle’ function must be assigned to

    the property (tracking.compositeInstanceTitle).

   Refer the screenshots

Build Error: Reference does not exist as wire target

Problem:
While building the composite application, you may get following error:
Build Error: Reference does not exist as wire target


Reference  does not exist as wire target


Solution:
1. Open the composite.xml file and check the wire mappings
2. Open each .ComponetType file and verify service and reference names with composite.xml file mappings
3. Find the unused mappings and remove from .ComponentType file
4. Rebuild the code.