FlowHandle received incoming message (flow stopped or duplicate received)

Hi All,
When I try to configure Solace for multiple VPN connections, I am getting below exception while publishing message to ConsumerFlow. Please help.

“FlowHandle received incoming message (flow stopped or duplicate received), ignoring.
Could not reply for correlationId: 3926add4-4aab-4472-b7ab-4d460e0ecf30”,“exception”

Could you elaborate more on your use case? “Multiple VPN connections”?