Bad_NoSubscription ,What strategy should be adopted to handle it

[6triker]

ServiceFault(responseHeader=ResponseHeader(timestamp=DateTime{utcTime=133989367892190000, javaDate=Wed Aug 06 14:53:09 CST 2025}, requestHandle=33925, serviceResult=StatusCode{name=Bad_NoSubscription, value=0x80790000, quality=bad}, serviceDiagnostics=null, stringTable=null, additionalHeader=ExtensionObject{encoded=ByteString{bytes=null}, encodingId=NodeId{ns=0, id=0}})

I need to collect 100000 points, I collect them through subscription. When I keep reporting this exception, how should I handle it

[kevinherron]

This probably means the Subscription has timed out on the Server side for some reason. It's usually sent when either a PublishRequest is received but there is no Subscription.

Do your MonitoredItems stop updating after receiving this? Are you able to get a Wireshark capture of traffic leading up to one of these ServiceFaults?