Production In-App Payments SDK – invalid_application_id

caffesabrina — Wed, 09 Sep 2026 07:30:47 GMT

Hi Square Developer Support,

We are preparing our Caffè Sabrina iOS app for production payments using Square.

The Square integration works correctly in Sandbox, but when switching to Production, token generation fails with:

invalid_application_id

Production Application ID:
sq0idp-mH0kidmo40W1RGIHahG5og

Production Location ID:
L9TQB99P87QPN

The Production Application ID has been copied directly from our Square Developer Console.

The failure occurs during token generation, before our backend payment request is made. Consequently, we are not seeing a corresponding Payments API request in Square API Logs.

Could you please check whether this Production application is correctly enabled/configured for In-App Payments token generation and whether there is an account/application configuration issue on Square's side?

Sandbox token generation is working correctly; the problem occurs only in Production.

We can provide screenshots, SDK version, bundle ID and additional diagnostic information if required.

Thank you.

Re: Production In-App Payments SDK – invalid_application_id

JTPets — Wed, 09 Sep 2026 13:32:30 GMT

100% head on over to the developer forums - you wil get a much better answer and knowledge base for an issue like this. I am not a professional developer but something in your token is not making it to the api endpoint for authorization, I would add some debug code around the actions triggering this specific issue. https://developer.squareup.com/forums

thread Production In-App Payments SDK – invalid_application_id in Payments Troubleshooting

Production In-App Payments SDK – invalid_application_id

Re: Production In-App Payments SDK – invalid_application_id