After you created a PayPal Business account you need the API credentials of the account in order to create the bond between the platform and Sandbox website
The API credentials must be inserted in the admin area of your platform, as you can see in the picture below:
To view your account API credentials go to My Account page:
1. Click on My Account tab to open the page
2. Click on Profile tab to view the menu of your profile
3. Click on My selling tools to open the page
On My selling tools page, you will see the API Credentials area
1. Click the Update button to view/edit your API credentials
Edit API Credentials
1. Click here to add or edit the API credentials
2. Click here to view your API credentials
If you clicked the view API credentials link, the following page will open:
1. Here you can view the username, the password and the signature that must be inserted in the admin area
2. Click here to complete the process
3. Click here to remove the API credentials