diff --git a/src/three-domain-secure/api.js b/src/three-domain-secure/api.js
index 50f9b76a8..b1e7e4177 100644
--- a/src/three-domain-secure/api.js
+++ b/src/three-domain-secure/api.js
@@ -39,40 +39,15 @@ export class HTTPClient implements HTTPClientType {
 }
 
 export class RestClient extends HTTPClient {
-  request({ baseURL, ...rest }: HTTPRequestOptions): ZalgoPromise<{ ... }> {
-    return callRestAPI({
-      url: baseURL ?? this.baseURL ?? "",
-      accessToken: this.accessToken,
-      ...rest,
-    });
-  }
-  authRequest({
+  request({
     baseURL,
     accessToken,
     ...rest
   }: HTTPRequestOptions): ZalgoPromise<{ ... }> {
-    return request({
-      method: "post",
+    return callRestAPI({
       url: baseURL ?? this.baseURL ?? "",
-      headers: {
-        // $FlowIssue
-        Authorization: `Basic ${accessToken}`,
-      },
+      accessToken: accessToken ?? this.accessToken,
       ...rest,
-    }).then(({ body }) => {
-      if (body && body.error === "invalid_client") {
-        throw new Error(
-          `Auth Api invalid client id: \n\n${JSON.stringify(body, null, 4)}`
-        );
-      }
-
-      if (!body || !body.access_token) {
-        throw new Error(
-          `Auth Api response error:\n\n${JSON.stringify(body, null, 4)}`
-        );
-      }
-
-      return body.access_token;
     });
   }
 }
diff --git a/src/three-domain-secure/component.jsx b/src/three-domain-secure/component.jsx
index b3ec2d0ea..9db2a501d 100644
--- a/src/three-domain-secure/component.jsx
+++ b/src/three-domain-secure/component.jsx
@@ -3,22 +3,19 @@
 /* eslint-disable no-restricted-globals, promise/no-native */
 import { type LoggerType } from "@krakenjs/beaver-logger/src";
 import { type ZoidComponent } from "@krakenjs/zoid/src";
-import { base64encode } from "@krakenjs/belter/src";
 import { ZalgoPromise } from "@krakenjs/zalgo-promise/src";
 import { FPTI_KEY, CURRENCY } from "@paypal/sdk-constants/src";
 
-import { PAYMENT_3DS_VERIFICATION, AUTH } from "../constants/api";
+import { PAYMENT_3DS_VERIFICATION } from "../constants/api";
 import { ValidationError } from "../lib";
 
 import type {
   requestData,
-  responseBody,
   GqlResponse,
   MerchantPayloadData,
   SdkConfig,
   ThreeDSResponse,
   TDSProps,
-  Request,
 } from "./types";
 import { getFastlaneThreeDS } from "./utils";
 import type { GraphQLClient, RestClient } from "./api";
@@ -99,35 +96,9 @@ export class ThreeDomainSecureComponent {
     const data = parseMerchantPayload({ merchantPayload });
     this.fastlaneNonce = merchantPayload.nonce;
 
-    try {
-      const basicAuth = base64encode(`${this.sdkConfig.clientID}:`);
-      const authData = {
-        grant_type: `client_credentials`,
-      };
-
-      if (this.sdkConfig.merchantID?.length) {
-        // $FlowFixMe invalid error on key assignment
-        authData.target_subject = this.sdkConfig.merchantID[0];
-      }
-      // $FlowFixMe
-      const accessToken = await this.restClient.authRequest<Request, string>({
-        baseURL: `${this.sdkConfig.paypalApiDomain}${AUTH}`,
-        accessToken: `${basicAuth}`,
-        data: authData,
-      });
-      // $FlowIssue confusing ZalgoPromise return type with resolved string value
-      this.restClient.setAccessToken(accessToken);
-    } catch (error) {
-      this.logger.warn(error);
-      throw error;
-    }
-
     try {
       // $FlowFixMe
-      const { status, links } = await this.restClient.request<
-        requestData,
-        responseBody
-      >({
+      const { status, links } = await this.restClient.request({
         method: "POST",
         baseURL: `${this.sdkConfig.paypalApiDomain}/${PAYMENT_3DS_VERIFICATION}`,
         data,
diff --git a/src/three-domain-secure/component.test.js b/src/three-domain-secure/component.test.js
index 3420480c9..3e52ce7fe 100644
--- a/src/three-domain-secure/component.test.js
+++ b/src/three-domain-secure/component.test.js
@@ -45,7 +45,6 @@ const mockRestClient = {
       },
     ],
   }),
-  authRequest: vi.fn(),
 };
 
 const mockEligibilityRequest = (body = defaultEligibilityResponse) => {
diff --git a/src/three-domain-secure/interface.js b/src/three-domain-secure/interface.js
index f8c814eb0..5a6e69634 100644
--- a/src/three-domain-secure/interface.js
+++ b/src/three-domain-secure/interface.js
@@ -5,7 +5,6 @@ import {
   getPayPalAPIDomain,
   getSDKToken,
   getClientID,
-  getMerchantID,
 } from "@paypal/sdk-client/src";
 import { destroy as zoidDestroy } from "@krakenjs/zoid/src";
 
@@ -34,7 +33,7 @@ export const ThreeDomainSecureClient: LazyExport<ThreeDomainSecureComponentInter
     __get__: () => {
       const threeDomainSecureInstance = new ThreeDomainSecureComponent({
         logger: getLogger(),
-        restClient: new RestClient(),
+        restClient: new RestClient({ accessToken: getSDKToken() }),
         graphQLClient: new GraphQLClient({
           baseURL:
             getEnv() === "production" ? BRAINTREE_PROD : BRAINTREE_SANDBOX,
@@ -45,7 +44,6 @@ export const ThreeDomainSecureClient: LazyExport<ThreeDomainSecureComponentInter
           authenticationToken: getSDKToken(),
           paypalApiDomain: getPayPalAPIDomain(),
           clientID: getClientID(),
-          merchantID: getMerchantID(),
         },
       });
       return devEnvOnlyExport({