# Payment API backend implementation

**URL:** <https://developer.squareup.com/forums/t/payment-api-backend-implementation/11054>\
**Category:** Questions\
**Tags:** payments-api\
**Created:** [October 18, 2023, 2:03pm UTC](https://developer.squareup.com/forums/t/payment-api-backend-implementation/11054 "2023-10-18T14:03:37Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![Bryan-Square](https://sea1.discourse-cdn.com/square/forums/user_avatar/developer.squareup.com/bryan-square/32/38_2.png) [@Bryan-Square](https://developer.squareup.com/forums/u/Bryan-Square)\
**Post date:** [April 26, 2024, 4:56pm UTC](https://developer.squareup.com/forums/t/payment-api-backend-implementation/11054/21 "2024-04-26T16:56:11Z")

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Absolutely, your application can handle payment processing for two distinct Square accounts. Have you considered implementing [OAuth](https://developer.squareup.com/docs/oauth-api/overview) for this purpose? By using OAuth, you can utilize a single application ID across multiple Square accounts. Each account will have its own unique access token, which you’ll use when making API calls to ensure that transactions are processed through the correct account. 🙂

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