Java.lang.NullPointerException Error When Creating a Vacancy or Reviewing a Notification in iRecruitment (Doc ID 1276837.1)

Symptoms

When attempting to review New Vacancy notification using a custom iRecruitment responsibility,
the following error occurs:

Error Page
You have encountered an unexpected error. Please contact your System Administrator for assistance. Click here for exception details.

Excerpts of error stack received:

ERROR
-----------------------
oracle.apps.fnd.framework.OAException: java.lang.NullPointerException
at oracle.apps.fnd.framework.OAException.wrapperException(OAException.java:912)
at oracle.apps.fnd.framework.OAException.wrapperException(OAException.java:886)
at oracle.apps.fnd.framework.OAException.wrapperInvocationTargetException(OAException.java:1009)
at oracle.apps.fnd.framework.server.OAUtility.invokeMethod(OAUtility.java:211)
at oracle.apps.fnd.framework.server.OAUtility.invokeMethod(OAUtility.java:133)
at
(..)
## Detail 0 ##
java.lang.NullPointerException
at oracle.apps.irc.vacancy.server.VacancyAMImpl.getDefaultBusinessGroup(VacancyAMImpl.java:3275)
at oracle.apps.irc.vacancy.server.VacancyAMImpl.createVacancy(VacancyAMImpl.java:307)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
(..)

STEPS
-----------------------
The issue can be reproduced at will with the following steps:

1. Responsibility: System Administrator.
2. Navigation: Security - Responsibility.
3. Create custom responsibility.
4. Responsibility: HR Responsibility.
5. Navigation: Security - Profiles.
6. Create security profile based on organization hierarchy.
7. Responsibility: System Administrator.
8. Navigation: Profile - System.
9. Link responsibility to security profile.
10. Responsibility: HR Responsibility.
11. Run Security List Maintenance process.
12. Responsibility: Custom responsibility.
13. Select the “New Vacancy” Link in Notifications list.
14. Get error message.

Cause

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