ERROR: Enabling Ingress and Egress on GigabitEthernet0/1.2452 index:17 ingress:True egress:True The variable on the agent is either non-existant or under the current context does not have access rights.

Iam getting the above error after selecting the configured interface to monitor the traffic flow. can  anyone help me here to solve this issue..?

I have configured in Cisco 3845 router for capturing the netflow traffic...