# New master funding source in sandbox

**URL:** <https://discuss.dwolla.com/t/new-master-funding-source-in-sandbox/6066>\
**Category:** General\
**Created:** [August 12, 2020, 1:00am UTC](https://discuss.dwolla.com/t/new-master-funding-source-in-sandbox/6066 "2020-08-12T01:00:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![cmschuetz](https://avatars.discourse-cdn.com/v4/letter/c/3ab097/32.png) [@cmschuetz](https://discuss.dwolla.com/u/cmschuetz)\
**Post date:** [August 12, 2020, 1:00am UTC](https://discuss.dwolla.com/t/new-master-funding-source-in-sandbox/6066/1 "2020-08-12T01:00:43Z")

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

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**Author:** ![shreya](https://sea2.discourse-cdn.com/dwolla/user_avatar/discuss.dwolla.com/shreya/32/2154_2.png) [@shreya](https://discuss.dwolla.com/u/shreya)\
**Post date:** [August 12, 2020, 7:51pm UTC](https://discuss.dwolla.com/t/new-master-funding-source-in-sandbox/6066/2 "2020-08-12T19:51:36Z")

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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](https://docs.dwolla.com/#create-a-funding-source-for-an-account)

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](https://developers.dwolla.com/guides/dwolla-js/instant-account-verification#add-a-bank-using-dwollajs--iav)  
[Adding + Verifying bank using Plaid integration](https://developers.dwolla.com/guides/plaid#plaid-integration)

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