It would be useful to be able to save the payment gateways without needing to have the secret values saved in the gateway form. This can happen when e.g. you're storing the API keys via a secret settings file that isn't stored in the repository and want to store something like "CHECKTHESETTINGSFILE" in the config form.
Provide a way of saving the gateway form with invalid API keys.
Work out the best approach to allow the form to be saved with invalid / fake values.
Make the necessary changes.
The settings form can be saved without any changes.
n/a
n/a
Active
1.0
User experience
What I've had to do is to disable the API checks in ExpressCheckout::validateConfigurationForm() and Checkout::validateConfigurationForm(), then I can manually tweak the configuration via the yml files.