java.lang.NullPointerException

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  • how to disable the button based on conditon?
    via by Srini-999,
    • java.lang.NullPointerException at xxhr.oracle.apps.per.selfservice.appraisals.webui.XXMAReviewPageCOExt_Sr3.processRequest(XXMAReviewPageCOExt_Sr3.java:20) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processRequest(OAWebBeanHelper.java:600) at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processRequest(OAWebBeanContainerHelper.java:252) at oracle.apps.fnd.framework.webui.OAPageLayoutHelper.processRequest(OAPageLayoutHelper.java:1182) at oracle.apps.fnd.framework.webui.beans.layout.OAPageLayoutBean.processRequest(OAPageLayoutBean.java:1569) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processRequestChildren(OAWebBeanHelper.java:968) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processRequestChildren(OAWebBeanHelper.java:935) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processRequest(OAWebBeanHelper.java:659) at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processRequest(OAWebBeanContainerHelper.java:252) at oracle.apps.fnd.framework.webui.beans.form.OAFormBean.processRequest(OAFormBean.java:385) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processRequestChildren(OAWebBeanHelper.java:968) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processRequestChildren(OAWebBeanHelper.java:935) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processRequest(OAWebBeanHelper.java:659) at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processRequest(OAWebBeanContainerHelper.java:252) at oracle.apps.fnd.framework.webui.beans.OABodyBean.processRequest(OABodyBean.java:353) at oracle.apps.fnd.framework.webui.OAPageBean.processRequest(OAPageBean.java:2607) at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:1940) at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:543) at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:431)
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