Error WRE 99999 (The operation has timed out) is returned in the Burst or XDC activity log or server log.
This issue can have two potential causes:
InfoBurst Platform Timeout:
Configure the Request Timeout setting in Platform Configurations to an interval suitable to the length of time required to complete long-running processes in BusinessObjects.
BusinessObjects Idle Job Timeout:
Increase the Idle Job Timeout setting in the WebIntelligenceProcessingServer or DesktopIntelligenceProcessingServer. The setting should accommodate for the total amount of time required to
refresh and publish the document.