In Riva Cloud or Riva On-Premise, "(503) Server Unavailable" errors may sporadically appear throughout crmex-log files.
2011-11-22 10:06:17,054 ERROR [CTP-jwc #814]  Minor error occurred during synchronization.
Omni.Scheduling.SchedulePostponeException: The remote server returned an error: (503) Server Unavailable. ---> System.Net.WebException: The remote server returned an error: (503) Server Unavailable.
Oracle CRM On Demand imposes a set of "web services on demand limiters" that can limit
If the total volume of data being requested or synced during a Riva sync cycle exceeds the permitted threshold value, Oracle On Demand web services report that the server is unavailable.
Solution for Riva Cloud
Solution for Riva On-Premise
Reducing the number of requests and/or volume of data syncing can be accomplished in several ways, including:
Article ID: 597
Last updated: 24 Oct, 2016
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Riva On-Premise - CRM Sync -> Manage Riva On-Premise (Admin Guides) -> CRM Systems -> Oracle CRM On Demand -> Errors & Troubleshooting