# End to end process

**URL:** <https://discuss.dwolla.com/t/end-to-end-process/4712>\
**Category:** API Support\
**Created:** [March 23, 2018, 12:01am UTC](https://discuss.dwolla.com/t/end-to-end-process/4712 "2018-03-23T00:01:57Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![trungnguyen](https://avatars.discourse-cdn.com/v4/letter/t/e19adc/32.png) [@trungnguyen](https://discuss.dwolla.com/u/trungnguyen)\
**Post date:** [March 23, 2018, 12:01am UTC](https://discuss.dwolla.com/t/end-to-end-process/4712/1 "2018-03-23T00:01:57Z")

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Hi,

I’ve integrated Dwolla API into our system, made some tests on account on-boarding and bank transfer. Every thing works perfectly. At the last case, I would like to test if a transaction is rejected or denied, and obtain the notification from Dwolla through Webhook. Could you advice me? Thank you.

Trung

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**Author:** ![spencer](https://sea2.discourse-cdn.com/dwolla/user_avatar/discuss.dwolla.com/spencer/32/2143_2.png) [@spencer](https://discuss.dwolla.com/u/spencer)\
**Post date:** [March 23, 2018, 8:53pm UTC](https://discuss.dwolla.com/t/end-to-end-process/4712/2 "2018-03-23T20:53:41Z")

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Hi @trungnguyen, For more information on testing transfer failure events in Dwolla’s sandbox environment, reference [this article](https://developers.dwolla.com/resources/testing.html#test-bank-transfer-failures). Please feel free to reply back if you would like us to go into greater detail on this topic!