No flows seen on VCF Operations for Networks GUI

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VCF Operations for Networks

No flows seen on VCF Operations for Networks GUI
Source IP Address do not see any flows when UI query is executed

Refer to screenshots below:
Under Settings>Accounts and Datasource page we see that vCenter and NSXT datasources are added and we see the flows numbers as well.
See screenshot below showing flow numbers:
Flows were manually generated and when SSH to collector appliance we see raw flows for the source IP address.

Flows will not be seen if there is a block on the permitter firewall or datacenter firewall

To see the flows on VCF Operations for Networks GUI:

Fix the firewall block wait for a couple of pooling cycle to get complete for the datasources ( wait for 15-30 minutes).

Execute below GUI queries for the source IPs to se the flow data.

flows where source IP address = source_IP_Address
flows where source IP address = source_IP_Address

Refer to below other scenarios as well:

Please ensure that the specific VDS and its DVPGs and Uplink properties has Netflow monitoring Enabled and the collector IP address is that of VMware Aria Operations for Networks collector.
IPFIX Netflow packets getting dropped in between by a firewall (NSX, Virtual or Physical). Please ensure that the Netflow packets destined for UDP port 2055 on VMware Aria Operations for Networks collector IP is allowed by any firewall that may be present in the route between ESXi Host and the
VMware Aria Operations for Networks Collector.
The ESXi host has ceased to send IPFIX Netflow packets. The ESXi host backs off sending the Netflow packets after some time if UDP port 2055 is not reachable. This may happen due to firewall dropping the packets.
The VMware Aria Operations for Networks collector is not reachable by ESXi Host due to network routing problem. Please ensure that the proper route exist between ESXi Host and the VMware Aria Operations for Networks collector.

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