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Looking at the documentation and community discussions, here’s how to handle the non-durable topic endpoint limit issue:
The error “503: No More Non-Durable Queue or Topic Endpoint [Subcode:29]” indicates that you’ve reached the maximum allowed number of non-durable endpoints. This can be addressed by:
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Checking if there are any stale non-durable endpoints that can be removed. Non-durable endpoints are automatically removed 60 seconds after the client disconnects.
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If you need more non-durable endpoints, you’ll need to:
- Update the broker’s max-connections setting to a higher value (up to 1000 for standard edition)
- Increase the Message VPN’s max-endpoints setting
- Ensure the broker has sufficient resources allocated for the increased limits
It’s important to note that:
- Non-durable endpoints are temporary and will be removed automatically after client disconnection
- The 60-second cleanup timeout is not configurable
- A client application with proper permissions can manually de-provision an endpoint if needed before the timeout
Relevant sources: