diff --git a/adev/shared-docs/pipeline/api-gen/rendering/symbol-context.ts b/adev/shared-docs/pipeline/api-gen/rendering/symbol-context.ts
index d363f7641a8..83a1ce1b548 100644
--- a/adev/shared-docs/pipeline/api-gen/rendering/symbol-context.ts
+++ b/adev/shared-docs/pipeline/api-gen/rendering/symbol-context.ts
@@ -38,8 +38,6 @@ export function getCurrentSymbol(): string | undefined {
   return currentSymbol;
 }
 
-export function logUnknownSymbol(link: string, symbol: string): void {
-  console.warn(
-    `WARNING: {@link ${link}} is invalid, ${symbol} or ${currentSymbol}.${symbol} is unknown in this context`,
-  );
+export function unknownSymbolMessage(link: string, symbol: string): string {
+  return `WARNING: {@link ${link}} is invalid, ${symbol} or ${currentSymbol}.${symbol} is unknown in this context`;
 }
diff --git a/adev/shared-docs/pipeline/api-gen/rendering/test/marked.spec.ts b/adev/shared-docs/pipeline/api-gen/rendering/test/marked.spec.ts
index ffe03191815..85011204105 100644
--- a/adev/shared-docs/pipeline/api-gen/rendering/test/marked.spec.ts
+++ b/adev/shared-docs/pipeline/api-gen/rendering/test/marked.spec.ts
@@ -34,6 +34,13 @@ describe('markdown to html', () => {
     const symbols = new Map<string, string>([
       ['AfterRenderPhase', 'core'],
       ['afterRender', 'core'],
+      ['EmbeddedViewRef', 'core'],
+      ['ChangeDetectionStrategy', 'core'],
+      ['ChangeDetectorRef', 'core'],
+      ['withNoHttpTransferCache', 'platform-browser'],
+      ['withHttpTransferCacheOptions', 'platform-browser'],
+      ['withI18nSupport', 'platform-browser'],
+      ['withEventReplay', 'platform-browser'],
     ]);
     setSymbols(symbols);
     for (const entry of entryJson.entries) {
diff --git a/adev/shared-docs/pipeline/api-gen/rendering/test/renderable.spec.ts b/adev/shared-docs/pipeline/api-gen/rendering/test/renderable.spec.ts
index 1400bc2bacd..9efb7ed8381 100644
--- a/adev/shared-docs/pipeline/api-gen/rendering/test/renderable.spec.ts
+++ b/adev/shared-docs/pipeline/api-gen/rendering/test/renderable.spec.ts
@@ -12,6 +12,7 @@ import {getRenderable} from '../processing';
 import {DocEntryRenderable} from '../entities/renderables';
 import {initHighlighter} from '../shiki/shiki';
 import {configureMarkedGlobally} from '../marked/configuration';
+import {setSymbols} from '../symbol-context';
 
 // Note: The tests will probably break if the schema of the api extraction changes.
 // All entries in the fake-entries are extracted from Angular's api.
@@ -28,6 +29,19 @@ describe('renderable', () => {
       encoding: 'utf-8',
     });
     const entryJson = JSON.parse(entryContent) as any;
+    const symbols = new Map<string, string>([
+      ['AfterRenderPhase', 'core'],
+      ['afterRender', 'core'],
+      ['EmbeddedViewRef', 'core'],
+      ['ChangeDetectionStrategy', 'core'],
+      ['ChangeDetectorRef', 'core'],
+      ['withNoHttpTransferCache', 'platform-browser'],
+      ['withHttpTransferCacheOptions', 'platform-browser'],
+      ['withI18nSupport', 'platform-browser'],
+      ['withEventReplay', 'platform-browser'],
+    ]);
+    setSymbols(symbols);
+
     for (const entry of entryJson.entries) {
       const renderableJson = getRenderable(entry, '@angular/fakeentry') as DocEntryRenderable;
       entries.set(entry['name'], renderableJson);
diff --git a/adev/shared-docs/pipeline/api-gen/rendering/test/transforms/jsdoc-transforms.spec.ts b/adev/shared-docs/pipeline/api-gen/rendering/test/transforms/jsdoc-transforms.spec.ts
index 912fcec27a5..6f8a07ec64d 100644
--- a/adev/shared-docs/pipeline/api-gen/rendering/test/transforms/jsdoc-transforms.spec.ts
+++ b/adev/shared-docs/pipeline/api-gen/rendering/test/transforms/jsdoc-transforms.spec.ts
@@ -70,10 +70,6 @@ describe('jsdoc transforms', () => {
           name: 'see',
           comment: '{@link /cli/build ng build}',
         },
-        {
-          name: 'see',
-          comment: '{@link cli/build ng build}',
-        },
         {
           name: 'see',
           comment: '{@link /ecosystem/rxjs-interop/output-interop Output Interop}',
@@ -135,16 +131,24 @@ describe('jsdoc transforms', () => {
       url: '/cli/build',
     });
 
-    // TODO: in the future when all links are valid we would throw an error instead when not starting with a slash
-    // Links should be absolute within adev (to support both next & stable site)
     expect(entry.additionalLinks[11]).toEqual({
-      label: 'ng build',
-      url: 'cli/build',
-    });
-
-    expect(entry.additionalLinks[12]).toEqual({
       label: 'Output Interop',
       url: '/ecosystem/rxjs-interop/output-interop',
     });
   });
+
+  it('should throw on invalid relatie @link', () => {
+    const entryFn = () =>
+      addHtmlAdditionalLinks({
+        jsdocTags: [
+          {
+            name: 'see',
+            comment: '{@link cli/build ng build}',
+          },
+        ],
+        moduleName: 'test',
+      });
+
+    expect(entryFn).toThrowError(/Forbidden relative link: cli\/build ng build/);
+  });
 });
diff --git a/adev/shared-docs/pipeline/api-gen/rendering/transforms/jsdoc-transforms.ts b/adev/shared-docs/pipeline/api-gen/rendering/transforms/jsdoc-transforms.ts
index 529e0df952e..69e089692bf 100644
--- a/adev/shared-docs/pipeline/api-gen/rendering/transforms/jsdoc-transforms.ts
+++ b/adev/shared-docs/pipeline/api-gen/rendering/transforms/jsdoc-transforms.ts
@@ -31,7 +31,7 @@ import {
 
 import {getLinkToModule} from './url-transforms';
 import {addApiLinksToHtml} from './code-transforms';
-import {getCurrentSymbol, getModuleName, logUnknownSymbol} from '../symbol-context';
+import {getCurrentSymbol, getModuleName, unknownSymbolMessage} from '../symbol-context';
 
 export const JS_DOC_REMARKS_TAG = 'remarks';
 export const JS_DOC_USAGE_NOTES_TAG = 'usageNotes';
@@ -186,6 +186,12 @@ function parseAtLink(link: string): {label: string; url: string} {
   if (rawSymbol.startsWith('#')) {
     rawSymbol = rawSymbol.substring(1);
   } else if (rawSymbol.includes('/')) {
+    if (!rawSymbol.startsWith('/') && !rawSymbol.startsWith('http')) {
+      throw Error(
+        `Forbidden relative link: ${link}. Links should be absolute and start with a slash`,
+      );
+    }
+
     return {
       url: rawSymbol,
       label: description ?? rawSymbol.split('/').pop()!,
@@ -204,11 +210,9 @@ function parseAtLink(link: string): {label: string; url: string} {
     moduleName = getModuleName(`${currentSymbol}.${symbol}`);
 
     if (!moduleName || !currentSymbol) {
-      // TODO: remove the links that generate this error
-      // TODO: throw an error when there are no more warning generated
-      logUnknownSymbol(link, symbol);
-      return {label, url: '#'};
+      throw unknownSymbolMessage(link, symbol);
     }
+
     subSymbol = symbol;
     symbol = currentSymbol;
   }