Publish to OIC Integration

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Hi experts,

I've done some tests with Publish to OIC / Subscribe to OIC and notice that messages are not queued.

That is, if we stop Subscribe to OIC, messages sent while it was stopped are lost.

Is there a way to prevent messages to be lost if either Subscrip is stopped or the integration called by the Subscribe is stopped?

Is there a way to see messages enqueued?

Thanks,

Samuel Lima