"Page Security cannot be asserted" error

Question

I have a page that depending on business logic will give various error dialogs (Y/N), however I keep getting the following error (when returning to self/calling page):<br>
<<<b>Page Security cannot be asserted. The page has either expired or has been tampered.</b>>>
<br><br>
I've was getting this when I pressed no so I did a work around by explicitly forwarding to current page:<br>
<< super.setForwardURL(oapagecontext, true, "OA.jsp?page=/oracle/apps/per/[mypackages]/MyPagePG&akRegionApplicationId=800", true, hashmap1, "N", true);>><br><br>
But after adding that, if I throw a validation exception (<<throw new OAException(..)>>) it gives me the same old error along with the one I specified in the exception constructor.<br><br>
Is there something special about this foward? In other places I use the very same method to redirect to dialog without any problems.<br><br>
Any ideas what causes this error?<br>
-C
<br><br>Source:<br>
<<
<br> String yes = oapagecontext.getMessage("AK", "FWK_TBX_T_YES", null);
<br> String no = oapagecontext.getMessage("AK", "FWK_TBX_T_NO", null);
<br> dialogPage.setOkButtonItemName(okButtonName);
<br> dialogPage.setNoButtonItemName("No");
<br> dialogPage.setOkButtonToPost(true);
<br> dialogPage.setNoButtonToPost(true);
<br> dialogPage.setPostToCallingPage(true);
<br> dialogPage.setOkButtonLabel(yes);
<br> dialogPage.setNoButtonLabel(no);
<br> java.util.Hashtable formParams = new java.util.Hashtable();
<br> if(appraisalId!=null){
<br> formParams.put("AppraisalId", appraisalId);
<br> }
<br> if(objectiveId!=null){
<br> formParams.put("pObjectiveId", objectiveId);
<br> }
<br> if(oapagecontext.getParameter("AddAnotherYes")!=null){
<br> formParams.put("AddAnotherYes", oapagecontext.getParameter("AddAnotherYes"));
<br> }
<br> if(oapagecontext.getParameter("ApplyYes")!=null){
<br> formParams.put("ApplyYes", oapagecontext.getParameter("ApplyYes"));
<br> }
<br> formParams.put("event", oapagecontext.getParameter("event"));
<br> dialogPage.setFormParameters(formParams);
<br> oapagecontext.redirectToDialogPage(dialogPage);
>>

Answer 1

I found the problem.<br><br>
<b>HashMap hashmap = super.getKeyParams(oapagecontext);<br>
hashmap.put("MyParam1", value)<br>
hashmap.put("MyParam2", value)<br>
hashmap.put("MyParam3", value)<br>
</b><br><br>
As it turns out, "MyParam1" was already pre-populated in the key hashmap and so when I tried to reset it, the framework noticed it was rekeyed and threw the mentioned error. Simply removing the line that inserts that param into the map fixed the problem.<br><br>
So, the solution was to use the code inspector in debug mode to crawl the hashmap to see what key params were auto-populated.<br><br>
hth,<br>-C