Mollie is an online payments platform established in the Netherlands.
Odoo needs your API Credentials to connect with your Mollie account, which comprise:
API Key: The test or live API Key depending on the configuration of the acquirer.
You can copy your credentials from your Mollie account, and paste them in the related fields under the Credentials tab.
To retrieve your API key, log into your Mollie account, go to, and copy your Test or Live API Key.
If you are trying Mollie as a test, with the Test API key, change the State to Test Mode. We recommend doing this on a test Odoo database, rather than on your main database.