user unable to create absence in SSHR page

hi,user unable create absence in SSHR page, getting below exception error.
can any one help.

Error: you have encountered with unexpected error, please contact system admin for assistance

Exception Details.

 oracle.apps.fnd.framework.OAException: java.lang.StringIndexOutOfBoundsException: String index out of range: 0

        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 oracle.apps.fnd.framework.server.OAApplicationModuleImpl.invokeMethod(OAApplicationModuleImpl.java:796)