While analyzing network flows in Operations for networks, the flows are showing "No Data to show" when trying to view protected data flows/matching DFW rules in NSX.
In the Collector logs, you find the error message "Could not fetch the Object data.java.lang.IllegalStateException: Error compressing entity with id POLICY_MANAGER_GATEWAY_FIREWALL_CONFIG and type GatewayFirewallConfig" which is a result of the empty API call for GET /policy/api/v1/infra/domains/default/gateway-policies
For example:
2025-10-22T15:50:14.031Z ERROR common.utils.CommonUtils NSXT_########.####.###_Config_OpMgr_Policy-1 logException:2680 Could not fetch the Object data.java.lang.IllegalStateException: Error compressing entity with id POLICY_MANAGER_GATEWAY_FIREWALL_CONFIG and type GatewayFirewallConfig at com.vnera.dataproviders.core.impl.vmware.policymanager.utils.PolicyManagerUtils.createPolicyManagerEntity(PolicyManagerUtils.java:758) _[dataproviders-0.001-SNAPSHOT.jar:_] at
{redacted for clarity and space}
Aria Operations for Networks 6.13.0
Aria Operations for Networks 6.14.0
The issue occurs when an internal API GET /policy/api/v1/infra/domains/default/gateway-policies
returns empty results because only DFW feature of NSX is being utilized which Operations for Networks does not handle correctly.
This issue is fixed in Aria Operations for Networks 6.14.1.
Refer to Release Notes for full details.