It is necessary to approve your Merchant, for that you just need to request the production request by sending the required information about the merchant.
To do this, just follow these steps:
Access an application sandbox and click "Request Production": 
Fill the informations and send the request:

| Field | Description |
|---|---|
| Legal Name | Legal Name of Your Merchant |
| Marketing Name | Marketing Name of Your Merchant |
| Website | Website of Your Merchant |
| Company Number | Company Number of Your Merchant |
| Tax Number | Tax Number of Your Merchant |
| Phone | Phone of Your Merchant |
| Legal Address | Legal Address of Your Merchant |
| Legal City | Legal City of Your Merchant |
| Legal State | Legal State of Your Merchant |
| Legal Country | Legal Country of Your Merchant |
| Legal Zip Code | Legal Zip Code of Your Merchant |
| Legal Representant | Legal Representant of Your Merchant |
| Industry | Industry of Your Merchant |
| Documents | Documents of Your Merchant |