There are some techniques to help debug your XSLT files. Malformed XSLT will cause error messages to appear in the WebLogic console. In addition, you can test the layout of a portal zone in isolation using this URL from a browser that is logged-in to the Oracle Utilities Customer Care and Billing system:
http:<server>:<port>/portal?type=xslTest&service=CILCALZP&xslURL=/WEB-INF/xsl/linkValueGrid.xsl&ACCT_ID=5922116763
(Ignore any JavaScript errors)
The important parameters are the service, the xslURL, and the service keys.
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