diff --git a/spec/index.bs b/spec/index.bs
index a94400e7..e27a8014 100644
--- a/spec/index.bs
+++ b/spec/index.bs
@@ -685,6 +685,38 @@ dictionary DisconnectedAccount {
   required USVString account_id;
 };
 </xmp>
+## The IdentityCredentialError Interface ## {#browser-api-identity-credential-error-interface}
+<!-- ============================================================ -->
+
+This specification introduces a new type of {{DOMException}}, the {{IdentityCredentialError}}. It
+is used when the [=IDP=] cannot create an {{IdentityCredential}} after the user has requested to use
+a federated account.
+
+<pre class="idl">
+  [Exposed=Window, SecureContext]
+  interface IdentityCredentialError: DOMException {
+    constructor(optional DOMString message = "", IdentityCredentialErrorInit options);
+    readonly attribute DOMString code;
+    readonly attribute DOMString url;
+  };
+</pre>
+
+<div algorithm="IdentityCredentialError constructor">
+The {{IdentityCredentialError/constructor()}}, given a |realm|, a {{DOMString}} |message| and a
+    {{IdentityCredentialErrorInit}} |options| must run the following steps:
+    1. Invoke the {{DOMException}}'s {{DOMException/constructor()}}, passing |realm| and |message|.
+    1. Set <a>this</a>.{{IdentityCredentialError/code}} to |options|.{{IdentityCredentialError/code}}.
+    1. Set <a>this</a>.{{IdentityCredentialError/url}} to |options.{{IdentityCredentialError/url}}.
+</div>
+
+<dl>
+    :   <b>{{IdentityCredentialError/code}}</b>
+    ::  The {{IdentityCredentialError/code}}'s attribute getter returns the value it is set to.
+        It represents the type of error which resulted in an {{IdentityCredential}} not being created.
+    :   <b>{{IdentityCredentialError/url}}</b>
+    ::  The {{IdentityCredentialError/url}}'s attribute getter returns the value it is set to.
+        It represents a URL where the user can learn more information about the error.
+</dl>
 
 <!-- ============================================================ -->
 ## The IdentityCredentialError Interface ## {#browser-api-identity-credential-error-interface}
@@ -1441,6 +1473,13 @@ dictionary IdentityProviderToken {
 };
 </xmp>
 
+<xmp class="idl">
+dictionary IdentityCredentialErrorInit {
+  DOMString code;
+  DOMString url;
+};
+</xmp>
+
 <!-- ============================================================ -->
 ### Request permission to sign-up ### {#request-permission-signup}
 <!-- ============================================================ -->