Introduction:

**Welcome to the integration documentation for our payment service! This guide will walk you through the steps required to integrate your application with our payment gateway. The integration process consists of two steps: retrieving available payment methods and executing payments.

**Step 1: Retrieve Available Payment Methods
In this step, you will send a request to our endpoint to receive a list of payment methods available for your account. This will allow you to present the available options to your users. We will provide code samples in React Native, Java, Kotlin, and Swift to demonstrate how to make the API request and handle the response.

**Step 2: Execute Payments and Handle Transaction Initiation
Once you have retrieved the available payment methods, the next step is to initiate and process payments. This involves creating a transaction on the selected gateway using the "ExecutePayment" endpoint. We will provide code samples in React Native, Java, Kotlin, and Swift to demonstrate how to initiate payments and handle the responses for different payment methods.

**Code Samples:
To make it easier for you to integrate with our service, we have prepared code samples in React Native, Java, Kotlin, and Swift. These samples showcase how to interact with our API endpoints and handle the responses in each respective language. You can refer to these samples as a starting point for integrating our payment service into your application.

I hope this introduction provides a clear overview of the documentation and sets the context for the following steps and code samples. Let me know if there's anything else you'd like to add or modify in the introduction or if you have any further requirements.