diff --git a/plugins/splunk-on-call/src/api/mocks.ts b/plugins/splunk-on-call/src/api/mocks.ts
index d5335bfef4..8db06fb9d3 100644
--- a/plugins/splunk-on-call/src/api/mocks.ts
+++ b/plugins/splunk-on-call/src/api/mocks.ts
@@ -17,6 +17,7 @@
 import {
   EscalationPolicyInfo,
   Incident,
+  RoutingKey,
   Team,
   User,
 } from '../components/types';
@@ -88,6 +89,18 @@ export const MOCK_TEAM: Team = {
   isDefaultTeam: false,
 };
 
+export const MOCK_ROUTING_KEY: RoutingKey = {
+  routingKey: 'test-routing-key',
+  targets: [
+    {
+      policyName: 'some policy',
+      policySlug: MOCK_TEAM.slug || '',
+      _teamUrl: `/api-public/v1/team/${MOCK_TEAM.slug}`,
+    },
+  ],
+  isDefault: false,
+};
+
 export const MOCK_TEAM_NO_INCIDENTS: Team = {
   ...MOCK_TEAM,
   name: 'test-noincidents',
diff --git a/plugins/splunk-on-call/src/components/EntitySplunkOnCallCard.test.tsx b/plugins/splunk-on-call/src/components/EntitySplunkOnCallCard.test.tsx
index da2cfbc2a3..8b58af8e46 100644
--- a/plugins/splunk-on-call/src/components/EntitySplunkOnCallCard.test.tsx
+++ b/plugins/splunk-on-call/src/components/EntitySplunkOnCallCard.test.tsx
@@ -28,6 +28,7 @@ import {
   MOCKED_ON_CALL,
   MOCKED_USER,
   MOCK_INCIDENT,
+  MOCK_ROUTING_KEY,
   MOCK_TEAM,
   MOCK_TEAM_NO_INCIDENTS,
 } from '../api/mocks';
@@ -45,6 +46,7 @@ const mockSplunkOnCallApi: Partial<SplunkOnCallClient> = {
   getIncidents: async () => [MOCK_INCIDENT],
   getOnCallUsers: async () => MOCKED_ON_CALL,
   getTeams: async () => [MOCK_TEAM],
+  getRoutingKeys: async () => [MOCK_ROUTING_KEY],
   getEscalationPolicies: async () => ESCALATION_POLICIES,
 };
 
@@ -71,6 +73,17 @@ const mockEntity = {
   },
 } as Entity;
 
+const mockEntityWithRoutingKeyAnnotation = {
+  apiVersion: 'backstage.io/v1alpha1',
+  kind: 'Component',
+  metadata: {
+    name: 'splunkoncall-test',
+    annotations: {
+      'splunk.com/on-call-routing-key': MOCK_ROUTING_KEY.routingKey,
+    },
+  },
+} as Entity;
+
 const mockEntityNoIncidents = {
   apiVersion: 'backstage.io/v1alpha1',
   kind: 'Component',
@@ -176,6 +189,34 @@ describe('SplunkOnCallCard', () => {
     ).toBeInTheDocument();
   });
 
+  it('handles warning for incorrect routing key annotation', async () => {
+    mockSplunkOnCallApi.getUsers = jest
+      .fn()
+      .mockImplementationOnce(async () => [MOCKED_USER]);
+    mockSplunkOnCallApi.getRoutingKeys = jest
+      .fn()
+      .mockImplementationOnce(async () => [MOCK_ROUTING_KEY]);
+    mockSplunkOnCallApi.getTeams = jest
+      .fn()
+      .mockImplementationOnce(async () => []);
+
+    const { getByText, queryByTestId } = render(
+      wrapInTestApp(
+        <ApiProvider apis={apis}>
+          <EntityProvider entity={mockEntityWithRoutingKeyAnnotation}>
+            <EntitySplunkOnCallCard />
+          </EntityProvider>
+        </ApiProvider>,
+      ),
+    );
+    await waitFor(() => !queryByTestId('progress'));
+    expect(
+      getByText(
+        `Splunk On-Call API returned no record of teams associated with the "${MOCK_ROUTING_KEY.routingKey}" routing key`,
+      ),
+    ).toBeInTheDocument();
+  });
+
   it('opens the dialog when trigger button is clicked', async () => {
     mockSplunkOnCallApi.getUsers = jest
       .fn()
diff --git a/plugins/splunk-on-call/src/components/EntitySplunkOnCallCard.tsx b/plugins/splunk-on-call/src/components/EntitySplunkOnCallCard.tsx
index 559f7c551e..db479f9459 100644
--- a/plugins/splunk-on-call/src/components/EntitySplunkOnCallCard.tsx
+++ b/plugins/splunk-on-call/src/components/EntitySplunkOnCallCard.tsx
@@ -161,12 +161,14 @@ export const EntitySplunkOnCallCard = () => {
         key => key.routingKey === routingKeyAnnotation,
       );
       foundTeams = foundRoutingKey
-        ? foundRoutingKey.targets.map(target => {
-            const teamUrlParts = target._teamUrl.split('/');
-            const teamSlug = teamUrlParts[teamUrlParts.length - 1];
+        ? foundRoutingKey.targets
+            .map(target => {
+              const teamUrlParts = target._teamUrl.split('/');
+              const teamSlug = teamUrlParts[teamUrlParts.length - 1];
 
-            return teams.find(teamValue => teamValue.slug === teamSlug);
-          })
+              return teams.find(teamValue => teamValue.slug === teamSlug);
+            })
+            .filter(team => team !== undefined)
         : [];
     }
 
@@ -197,6 +199,15 @@ export const EntitySplunkOnCallCard = () => {
     return <Progress />;
   }
 
+  if (!usersAndTeams?.foundTeams || !usersAndTeams?.foundTeams.length) {
+    return (
+      <InvalidAnnotation
+        teamName={teamAnnotation}
+        routingKey={routingKeyAnnotation}
+      />
+    );
+  }
+
   const Content = ({
     team,
     usersHashMap,
@@ -237,15 +248,6 @@ export const EntitySplunkOnCallCard = () => {
 
   const teams = usersAndTeams?.foundTeams || [];
 
-  if (!teams.length) {
-    return (
-      <InvalidAnnotation
-        teamName={teamAnnotation}
-        routingKey={routingKeyAnnotation}
-      />
-    );
-  }
-
   return (
     <>
       {teams.map((team, i) => (