diff --git a/src/initialize/initialize.ts b/src/initialize/initialize.ts
index b268eb7..46d35fe 100644
--- a/src/initialize/initialize.ts
+++ b/src/initialize/initialize.ts
@@ -8,7 +8,7 @@ import {
     setJwtToken,
     setPublicOrderId,
     setShopIdentifier,
-    checkApiResponse,
+    checkApiResponse, IInitializeSimpleOrderResponse,
 } from 'src';
 
 /**
@@ -20,12 +20,12 @@ import {
  * @param shopIdentifier Identification for the shop in which the order is on
  * @param environment Set the environment where the library will be working on.
  */
-export async function initialize(initData: IInitializeOrderResponse, shopIdentifier: string, environment: IEnvironment): Promise<IApiReturnObject> {
+export async function initialize(initData: IInitializeOrderResponse | IInitializeSimpleOrderResponse, shopIdentifier: string, environment: IEnvironment): Promise<IApiReturnObject> {
     const {jwt_token: jwt, public_order_id: publicOrderId} = initData;
     const returnObject = {...baseReturnObject};
     returnObject.success = true;
     returnObject.response = initData;
-    const keysToCheck = [keysToTestFromResponse.applicationState, keysToTestFromResponse.initial_data, keysToTestFromResponse.jwt_token, keysToTestFromResponse.public_order_id];
+    const keysToCheck = [keysToTestFromResponse.jwt_token, keysToTestFromResponse.public_order_id];
     const returnValue = checkApiResponse(returnObject, keysToCheck);
     if(!returnValue.success) {
         return returnValue;
diff --git a/src/types/apiInterfaces.ts b/src/types/apiInterfaces.ts
index d83e040..0514b0f 100644
--- a/src/types/apiInterfaces.ts
+++ b/src/types/apiInterfaces.ts
@@ -14,6 +14,7 @@ export interface IApiSuccessResponse {
         IDeleteDiscountResponse |
         IGetPaymentIframeUrl |
         IInitializeOrderResponse |
+        IInitializeSimpleOrderResponse |
         ICssStylingPaymentIframeResponse |
         ICheckInventoryResponse |
         IAddPaymentResponse |
@@ -120,7 +121,7 @@ export interface IApiReturnObject {
     status: number;
     success: boolean;
     error: null | IFetchError;
-    response: null | IApiResponse | IApiBatchResponse;
+    response: null | IApiResponse | IApiBatchResponse | IInitializeSimpleOrderResponse;
 }
 
 export interface IFetchCallback extends Function {
@@ -134,6 +135,12 @@ export interface IInitializeOrderResponse {
     public_order_id: string
 }
 
+export interface IInitializeSimpleOrderResponse {
+    flow_settings: Record<string, unknown>;
+    jwt_token: string;
+    public_order_id: string;
+}
+
 export interface ICssStylingPaymentIframeResponse {
     style_sheet: IStyleSheet
 }