diff --git a/extensions/copilot/src/extension/completions-core/vscode-node/lib/src/diagnostics.ts b/extensions/copilot/src/extension/completions-core/vscode-node/lib/src/diagnostics.ts
index 3eaa1805465..3d442905cf0 100644
--- a/extensions/copilot/src/extension/completions-core/vscode-node/lib/src/diagnostics.ts
+++ b/extensions/copilot/src/extension/completions-core/vscode-node/lib/src/diagnostics.ts
@@ -23,13 +23,13 @@ interface Section {
 	items: SectionItems;
 }
 
-export function collectCompletionDiagnostics(accessor: ServicesAccessor, telemetry: TelemetryData | undefined, requestUuid?: string): Report {
+export function collectCompletionDiagnostics(accessor: ServicesAccessor, telemetry: TelemetryData | undefined, opportunityId?: string): Report {
 	const telemetryItems: SectionItems = {};
-	// The request UUID (VS Code core's `InlineCompletionContext.requestUuid`) is sourced from the shown
+	// The opportunity ID (VS Code core's `InlineCompletionContext.requestUuid`) is sourced from the shown
 	// item rather than `telemetry.properties.opportunityId`, since the latter can be stale for cached or
 	// typing-as-suggested completions whose telemetry is derived from an earlier request.
-	if (requestUuid) {
-		telemetryItems['Request UUID'] = requestUuid;
+	if (opportunityId) {
+		telemetryItems['Opportunity ID'] = opportunityId;
 	}
 	if (telemetry !== undefined) {
 		if (telemetry.properties.headerRequestId) {
@@ -38,9 +38,6 @@ export function collectCompletionDiagnostics(accessor: ServicesAccessor, telemet
 		if (telemetry.properties.choiceIndex) {
 			telemetryItems['Choice Index'] = telemetry.properties.choiceIndex;
 		}
-		if (telemetry.properties.opportunityId) {
-			telemetryItems['Opportunity ID'] = telemetry.properties.opportunityId;
-		}
 		if (telemetry.properties.clientCompletionId) {
 			telemetryItems['Client Completion ID'] = telemetry.properties.clientCompletionId;
 		}
diff --git a/extensions/copilot/src/extension/completions-core/vscode-node/lib/src/test/diagnostics.test.ts b/extensions/copilot/src/extension/completions-core/vscode-node/lib/src/test/diagnostics.test.ts
index 47cad4bf512..cc41621230c 100644
--- a/extensions/copilot/src/extension/completions-core/vscode-node/lib/src/test/diagnostics.test.ts
+++ b/extensions/copilot/src/extension/completions-core/vscode-node/lib/src/test/diagnostics.test.ts
@@ -17,11 +17,11 @@ suite('collectCompletionDiagnostics', function () {
 		accessor = createLibTestingContext().createTestingAccessor();
 	});
 
-	test('includes the request UUID alongside the telemetry fields', function () {
+	test('includes the opportunity ID alongside the telemetry fields', function () {
 		const telemetry = TelemetryWithExp.createEmptyConfigForTesting();
 		telemetry.properties.headerRequestId = 'header-123';
 		telemetry.properties.choiceIndex = '0';
-		// A different value than the passed request UUID to prove the two are sourced independently.
+		// A stale value that must be ignored: the opportunity ID comes from the item, not from telemetry.
 		telemetry.properties.opportunityId = 'stale-opportunity-id';
 		telemetry.properties.clientCompletionId = 'client-abc';
 		telemetry.properties.engineName = 'test-model';
@@ -34,19 +34,18 @@ suite('collectCompletionDiagnostics', function () {
 				items: {
 					Version: BuildInfo.getVersion(),
 					Editor: 'lib-tests-editor 1',
-					'Request UUID': 'icr-current-uuid',
+					'Opportunity ID': 'icr-current-uuid',
 					'Header Request ID': 'header-123',
 					'Choice Index': '0',
-					'Opportunity ID': 'stale-opportunity-id',
 					'Client Completion ID': 'client-abc',
 					'Model ID': 'test-model',
 				},
 			},
 		]);
-		assert.ok(formatDiagnosticsAsMarkdown(report).includes('- Request UUID: icr-current-uuid'));
+		assert.ok(formatDiagnosticsAsMarkdown(report).includes('- Opportunity ID: icr-current-uuid'));
 	});
 
-	test('includes the request UUID even when no telemetry is available', function () {
+	test('includes the opportunity ID even when no telemetry is available', function () {
 		const report = collectCompletionDiagnostics(accessor, undefined, 'icr-only');
 
 		assert.deepStrictEqual(report.sections, [
@@ -55,7 +54,7 @@ suite('collectCompletionDiagnostics', function () {
 				items: {
 					Version: BuildInfo.getVersion(),
 					Editor: 'lib-tests-editor 1',
-					'Request UUID': 'icr-only',
+					'Opportunity ID': 'icr-only',
 				},
 			},
 		]);