# Do Funding Source URLs Expire?

**URL:** <https://discuss.dwolla.com/t/do-funding-source-urls-expire/6714>\
**Category:** Transfers\
**Created:** [February 7, 2021, 8:08pm UTC](https://discuss.dwolla.com/t/do-funding-source-urls-expire/6714 "2021-02-07T20:08:40Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Cody\_Eddings](https://sea2.discourse-cdn.com/dwolla/user_avatar/discuss.dwolla.com/cody_eddings/32/2809_2.png) [@Cody\_Eddings](https://discuss.dwolla.com/u/Cody_Eddings)\
**Post date:** [February 7, 2021, 8:08pm UTC](https://discuss.dwolla.com/t/do-funding-source-urls-expire/6714/1 "2021-02-07T20:08:40Z")

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Once a card has been added for a given customer ID, does the returned funding source URL ever expire?

Wondering how to architect our back end around this. For example, could we store a funding source url in a database to allow a customer to initiate a new transfer without having to re-enter card details?

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**Author:** ![kmoreira](https://sea2.discourse-cdn.com/dwolla/user_avatar/discuss.dwolla.com/kmoreira/32/2718_2.png) [@kmoreira](https://discuss.dwolla.com/u/kmoreira)\
**Post date:** [February 8, 2021, 4:02pm UTC](https://discuss.dwolla.com/t/do-funding-source-urls-expire/6714/2 "2021-02-08T16:02:12Z")

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Hi @Cody_Eddings ,

Funding source URLs do not expire.

We recommend saving the newly created funding-source URL or even better, it’s unique ID in the database to create transfers within the future.

Creating a new card funding-source anytime a Customer needs to create a transfer isn’t necessary.

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<div class="post-metadata">

**Author:** ![Cody\_Eddings](https://sea2.discourse-cdn.com/dwolla/user_avatar/discuss.dwolla.com/cody_eddings/32/2809_2.png) [@Cody\_Eddings](https://discuss.dwolla.com/u/Cody_Eddings)\
**Post date:** [February 9, 2021, 4:40am UTC](https://discuss.dwolla.com/t/do-funding-source-urls-expire/6714/3 "2021-02-09T04:40:06Z")

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Got it. And is there a limit on the number of card funding sources that can be added to a customer? It seems like that number is 2 in my testing.

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**Author:** ![kmoreira](https://sea2.discourse-cdn.com/dwolla/user_avatar/discuss.dwolla.com/kmoreira/32/2718_2.png) [@kmoreira](https://discuss.dwolla.com/u/kmoreira)\
**Post date:** [February 9, 2021, 2:19pm UTC](https://discuss.dwolla.com/t/do-funding-source-urls-expire/6714/4 "2021-02-09T14:19:31Z")

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Hi @Cody_Eddings ,

That’s correct. The default card limit for a customer in the sandbox is 2. If you need to increase this number in your testing environment, just let me know by how many, and I can go in and change that for you.

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**Author:** ![Cody\_Eddings](https://sea2.discourse-cdn.com/dwolla/user_avatar/discuss.dwolla.com/cody_eddings/32/2809_2.png) [@Cody\_Eddings](https://discuss.dwolla.com/u/Cody_Eddings)\
**Post date:** [February 9, 2021, 8:35pm UTC](https://discuss.dwolla.com/t/do-funding-source-urls-expire/6714/5 "2021-02-09T20:35:06Z")

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I see, thanks @kmoreira . What’s the limit in production? Our use case will involve customers adding any number of debit cards over an indefinite period of time.

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**Author:** ![kmoreira](https://sea2.discourse-cdn.com/dwolla/user_avatar/discuss.dwolla.com/kmoreira/32/2718_2.png) [@kmoreira](https://discuss.dwolla.com/u/kmoreira)\
**Post date:** [February 10, 2021, 3:10pm UTC](https://discuss.dwolla.com/t/do-funding-source-urls-expire/6714/6 "2021-02-10T15:10:45Z")

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Hi @Cody_Eddings,

The default card limit in production is also 2. If you need a higher limit, this is something to bring up in the conversation you’ll have with a Dwolla Sales Rep as it needs approval.