diff --git a/src/frontend/generated/internet_identity_idl.js b/src/frontend/generated/internet_identity_idl.js
index ff4b6e0675..02bf4b8856 100644
--- a/src/frontend/generated/internet_identity_idl.js
+++ b/src/frontend/generated/internet_identity_idl.js
@@ -70,17 +70,17 @@ export const idlFactory = ({ IDL }) => {
   });
   const IdentityNumber = IDL.Nat64;
   const AuthnMethodProtection = IDL.Variant({
-    'unprotected' : IDL.Null,
-    'protected' : IDL.Null,
+    'Protected' : IDL.Null,
+    'Unprotected' : IDL.Null,
   });
+  const PublicKeyAuthn = IDL.Record({ 'pubkey' : PublicKey });
   const WebAuthn = IDL.Record({
     'pubkey' : PublicKey,
     'credential_id' : CredentialId,
   });
-  const PublicKeyAuthn = IDL.Record({ 'pubkey' : PublicKey });
   const AuthnMethod = IDL.Variant({
-    'webauthn' : WebAuthn,
-    'pubkey' : PublicKeyAuthn,
+    'Puubkey' : PublicKeyAuthn,
+    'WebAuthn' : WebAuthn,
   });
   const AuthnMethodData = IDL.Record({
     'metadata' : MetadataMap,
@@ -89,17 +89,12 @@ export const idlFactory = ({ IDL }) => {
     'authn_method' : AuthnMethod,
     'purpose' : Purpose,
   });
-  const AuthnMethodAddResponse = IDL.Variant({
-    'ok' : IDL.Null,
-    'invalid_metadata' : IDL.Text,
-  });
-  const AuthnMethodRemoveResponse = IDL.Variant({ 'ok' : IDL.Null });
+  const AuthnMethodAddError = IDL.Variant({ 'InvalidMetadata' : IDL.Text });
   const ChallengeKey = IDL.Text;
   const Challenge = IDL.Record({
     'png_base64' : IDL.Text,
     'challenge_key' : ChallengeKey,
   });
-  const CaptchaCreateResponse = IDL.Variant({ 'ok' : Challenge });
   const DeployArchiveResult = IDL.Variant({
     'creation_in_progress' : IDL.Null,
     'success' : IDL.Principal,
@@ -213,18 +208,15 @@ export const idlFactory = ({ IDL }) => {
     'metadata' : MetadataMap,
     'authn_method_registration' : IDL.Opt(AuthnMethodRegistrationInfo),
   });
-  const IdentityInfoResponse = IDL.Variant({ 'ok' : IdentityInfo });
-  const IdentityMetadataReplaceResponse = IDL.Variant({ 'ok' : IDL.Null });
   const ChallengeResult = IDL.Record({
     'key' : ChallengeKey,
     'chars' : IDL.Text,
   });
   const CaptchaResult = ChallengeResult;
-  const IdentityRegisterResponse = IDL.Variant({
-    'ok' : IdentityNumber,
-    'invalid_metadata' : IDL.Text,
-    'bad_captcha' : IDL.Null,
-    'canister_full' : IDL.Null,
+  const IdentityRegisterError = IDL.Variant({
+    'BadCaptcha' : IDL.Null,
+    'CanisterFull' : IDL.Null,
+    'InvalidMetadata' : IDL.Text,
   });
   const UserKey = PublicKey;
   const PrepareIdAliasRequest = IDL.Record({
@@ -274,15 +266,23 @@ export const idlFactory = ({ IDL }) => {
       ),
     'authn_method_add' : IDL.Func(
         [IdentityNumber, AuthnMethodData],
-        [IDL.Opt(AuthnMethodAddResponse)],
+        [
+          IDL.Opt(
+            IDL.Variant({ 'Ok' : IDL.Null, 'Err' : AuthnMethodAddError })
+          ),
+        ],
         [],
       ),
     'authn_method_remove' : IDL.Func(
         [IdentityNumber, PublicKey],
-        [IDL.Opt(AuthnMethodRemoveResponse)],
+        [IDL.Opt(IDL.Variant({ 'Ok' : IDL.Null, 'Err' : IDL.Null }))],
+        [],
+      ),
+    'captcha_create' : IDL.Func(
+        [],
+        [IDL.Opt(IDL.Variant({ 'Ok' : Challenge, 'Err' : IDL.Null }))],
         [],
       ),
-    'captcha_create' : IDL.Func([], [IDL.Opt(CaptchaCreateResponse)], []),
     'create_challenge' : IDL.Func([], [Challenge], []),
     'deploy_archive' : IDL.Func([IDL.Vec(IDL.Nat8)], [DeployArchiveResult], []),
     'enter_device_registration_mode' : IDL.Func([UserNumber], [Timestamp], []),
@@ -313,17 +313,24 @@ export const idlFactory = ({ IDL }) => {
     'http_request_update' : IDL.Func([HttpRequest], [HttpResponse], []),
     'identity_info' : IDL.Func(
         [IdentityNumber],
-        [IDL.Opt(IdentityInfoResponse)],
+        [IDL.Opt(IDL.Variant({ 'Ok' : IdentityInfo, 'Err' : IDL.Null }))],
         [],
       ),
     'identity_metadata_replace' : IDL.Func(
         [IdentityNumber, MetadataMap],
-        [IDL.Opt(IdentityMetadataReplaceResponse)],
+        [IDL.Opt(IDL.Variant({ 'Ok' : IDL.Null, 'Err' : IDL.Null }))],
         [],
       ),
     'identity_register' : IDL.Func(
         [AuthnMethodData, CaptchaResult, IDL.Opt(IDL.Principal)],
-        [IDL.Opt(IdentityRegisterResponse)],
+        [
+          IDL.Opt(
+            IDL.Variant({
+              'Ok' : IdentityNumber,
+              'Err' : IdentityRegisterError,
+            })
+          ),
+        ],
         [],
       ),
     'init_salt' : IDL.Func([], [], []),
diff --git a/src/frontend/generated/internet_identity_types.d.ts b/src/frontend/generated/internet_identity_types.d.ts
index 4a4274da15..2a6ac8d02e 100644
--- a/src/frontend/generated/internet_identity_types.d.ts
+++ b/src/frontend/generated/internet_identity_types.d.ts
@@ -27,10 +27,9 @@ export interface ArchiveInfo {
   'archive_config' : [] | [ArchiveConfig],
   'archive_canister' : [] | [Principal],
 }
-export type AuthnMethod = { 'webauthn' : WebAuthn } |
-  { 'pubkey' : PublicKeyAuthn };
-export type AuthnMethodAddResponse = { 'ok' : null } |
-  { 'invalid_metadata' : string };
+export type AuthnMethod = { 'Puubkey' : PublicKeyAuthn } |
+  { 'WebAuthn' : WebAuthn };
+export type AuthnMethodAddError = { 'InvalidMetadata' : string };
 export interface AuthnMethodData {
   'metadata' : MetadataMap,
   'protection' : AuthnMethodProtection,
@@ -38,20 +37,18 @@ export interface AuthnMethodData {
   'authn_method' : AuthnMethod,
   'purpose' : Purpose,
 }
-export type AuthnMethodProtection = { 'unprotected' : null } |
-  { 'protected' : null };
+export type AuthnMethodProtection = { 'Protected' : null } |
+  { 'Unprotected' : null };
 export interface AuthnMethodRegistrationInfo {
   'expiration' : Timestamp,
   'authn_method' : [] | [AuthnMethodData],
 }
-export type AuthnMethodRemoveResponse = { 'ok' : null };
 export interface BufferedArchiveEntry {
   'sequence_number' : bigint,
   'entry' : Uint8Array | number[],
   'anchor_number' : UserNumber,
   'timestamp' : Timestamp,
 }
-export type CaptchaCreateResponse = { 'ok' : Challenge };
 export type CaptchaResult = ChallengeResult;
 export interface Challenge {
   'png_base64' : string,
@@ -136,13 +133,10 @@ export interface IdentityInfo {
   'metadata' : MetadataMap,
   'authn_method_registration' : [] | [AuthnMethodRegistrationInfo],
 }
-export type IdentityInfoResponse = { 'ok' : IdentityInfo };
-export type IdentityMetadataReplaceResponse = { 'ok' : null };
 export type IdentityNumber = bigint;
-export type IdentityRegisterResponse = { 'ok' : IdentityNumber } |
-  { 'invalid_metadata' : string } |
-  { 'bad_captcha' : null } |
-  { 'canister_full' : null };
+export type IdentityRegisterError = { 'BadCaptcha' : null } |
+  { 'CanisterFull' : null } |
+  { 'InvalidMetadata' : string };
 export interface InternetIdentityInit {
   'max_num_latest_delegation_origins' : [] | [bigint],
   'assigned_user_number_range' : [] | [[bigint, bigint]],
@@ -239,13 +233,16 @@ export interface _SERVICE {
   >,
   'authn_method_add' : ActorMethod<
     [IdentityNumber, AuthnMethodData],
-    [] | [AuthnMethodAddResponse]
+    [] | [{ 'Ok' : null } | { 'Err' : AuthnMethodAddError }]
   >,
   'authn_method_remove' : ActorMethod<
     [IdentityNumber, PublicKey],
-    [] | [AuthnMethodRemoveResponse]
+    [] | [{ 'Ok' : null } | { 'Err' : null }]
+  >,
+  'captcha_create' : ActorMethod<
+    [],
+    [] | [{ 'Ok' : Challenge } | { 'Err' : null }]
   >,
-  'captcha_create' : ActorMethod<[], [] | [CaptchaCreateResponse]>,
   'create_challenge' : ActorMethod<[], Challenge>,
   'deploy_archive' : ActorMethod<[Uint8Array | number[]], DeployArchiveResult>,
   'enter_device_registration_mode' : ActorMethod<[UserNumber], Timestamp>,
@@ -265,14 +262,17 @@ export interface _SERVICE {
   'get_principal' : ActorMethod<[UserNumber, FrontendHostname], Principal>,
   'http_request' : ActorMethod<[HttpRequest], HttpResponse>,
   'http_request_update' : ActorMethod<[HttpRequest], HttpResponse>,
-  'identity_info' : ActorMethod<[IdentityNumber], [] | [IdentityInfoResponse]>,
+  'identity_info' : ActorMethod<
+    [IdentityNumber],
+    [] | [{ 'Ok' : IdentityInfo } | { 'Err' : null }]
+  >,
   'identity_metadata_replace' : ActorMethod<
     [IdentityNumber, MetadataMap],
-    [] | [IdentityMetadataReplaceResponse]
+    [] | [{ 'Ok' : null } | { 'Err' : null }]
   >,
   'identity_register' : ActorMethod<
     [AuthnMethodData, CaptchaResult, [] | [Principal]],
-    [] | [IdentityRegisterResponse]
+    [] | [{ 'Ok' : IdentityNumber } | { 'Err' : IdentityRegisterError }]
   >,
   'init_salt' : ActorMethod<[], undefined>,
   'lookup' : ActorMethod<[UserNumber], Array<DeviceData>>,