# MD for: https://www.mercadopago.com.br/developers/pt/docs/checkout-pro/create-application.md

\# Create application \*\*Applications\*\* are registered entities within Mercado Pago that act as a unique identifier for managing the authentication and authorization of your integrations. In other words, they serve as the link between your development and Mercado Pago, and they constitute the first stage in carrying out the integration. With them, you can access the necessary :toolTipComponent\[credentials\]{link="/developers/en/guides/additional-content/your-integrations/credentials" linkText="Credentials" content="Unique access keys used to identify an integration in your account, linked to your application. For more information, access the link below."} to interact with our APIs or specific services, as well as manage and organize your integration, which is why you must create an application for each Mercado Pago solution you integrate. To create an \*\*application\*\*, follow the steps below. 1\. In the upper right corner of Mercado Pago Developers, click on \*\*Login\*\* and enter the required information with the data for your Mercado Pago account. 2\. Once you are logged in, in the upper right corner of Mercado Pago Developers, click on \*\*Create application\*\* if your account does not yet have any created applications, or go to "Your integrations" and select \*\*View all\*\*. There, click on \*\*Create application\*\*. 3\. Once inside \*\*Your integrations\*\*, click on the \*\*Create application\*\* button. > NOTE > > To protect your account and ensure compliance with operations, during the creation of an application, you will need to do an identity verification if you haven’t done so already, or a re-authentication if you have previously completed the verification process. !\[create-application-1\](https://www.mercadopago.com.br/images/snippets/create-application-1-pt-v1.png) 4\. Enter a \*\*name\*\* to identify your application. The limit is up to 50 alphanumeric characters. 5\. Select \*\*Online payments\*\* as the type of payment you want to integrate, as this is the solution type corresponding to online stores. Click \*\*Continue\*\*. 6\. Select that you are integrating for a self-developed store. Optionally, you can enter your store's URL. Click \*\*Continue\*\*. 7\. Select the \*\*Checkouts\*\* option and then choose \*\*Checkout Pro\*\* as the solution you are going to integrate. 8\. Confirm the selected options. If you need to modify any selection, click the \*\*Edit\*\* button. Accept the \[Privacy Statement\](https://www.mercadopago.com.br/privacidade) and the \[Terms and Conditions\](https://www.mercadopago.com.br/developers/en/docs/resources/legal/terms-and-conditions) and click on \*\*Confirm\*\*. !\[Resumo de aplicação\](https://www.mercadopago.com.br/images/snippets/create-application/PT-new-app-pago-online-CHO-PRO-v1.png) In \[Your integration\](https://www.mercadopago.com.br/developers/panel/app), you will be able to view the list of all your created applications and access the \[Integration data\](https://www.mercadopago.com.br/developers/en/docs/checkout-pro/resources/application-details) for each of them. > NOTE > > If you wish, you can edit or delete an application. In the latter case, keep in mind that your store will lose the ability to receive payments through the Mercado Pago integration associated with that application. For more information, please refer to the \[Integration data\](https://www.mercadopago.com.br/developers/en/docs/checkout-pro/resources/application-details). ## Access test credentials After creating your application, the :toolTipComponent\[test credentials\]{link="/developers/en/docs/checkout-pro/resources/credentials" linkText="Credentials" content="Unique access keys that we use to identify an integration in your account, linked to your application. For more information, see the link below."} will also be automatically created. Use the \*\*test credentials\*\* to perform all necessary configurations and validations in a secure test environment. When accessing test credentials, the following credential pairs will be displayed: :toolTipComponent\[Public Key\]{content="Public key used in the frontend to access information and encrypt data. You can access it through \*Your integrations > Integration data > Tests > Test credentials\*."} and the :toolTipComponent\[Access Token\]{content="Private key of the application created in Mercado Pago, that must be used in the backend. You can access it through \*Your integrations > Integration data > Tests > Test credentials\*."}. !\[test credentials\](https://www.mercadopago.com.br/images/snippets/credentials/application-data-test-credentials-pt-v1.png) > NOTE > > If you are using an existing application, you will need to activate the test credentials. For more information, see the \[Credentials\](https://www.mercadopago.com.br/developers/en/docs/checkout-pro/additional-content/credentials) documentation.