New master funding source in sandbox

I deactivated the master funding source to test webhooks and am unable to add a new one or reactivate. Is this possible in sandbox?

Hi @cmschuetz – you can add a new funding-source in Sandbox via the API! Check out our docs for more information - API Reference | Dwolla API Documentation

In order too transfer funds from this funding-source, you’d also have to verify it using one of our verification methods.
Verify bank using microdeposits
Adding + Verifying bank using Plaid integration

Hope that helps! Let me know if you have any questions!