Square Developer Forums - Forums for asking about Square APIs and SDKs

Square Developer Forums

Topic	Replies	Views	Activity
Developer Support Consolidation Announcements Hi all - we wanted to provide an update. We’re consolidating developer support into a single channel. Starting May 1, our Developer Forums will be the central place for all questions and discussions and as part of this c…	1	586	July 12, 2026
Welcome to Square Developer Forums Site Feedback	9	13228	August 19, 2026
Square form fails to initialise - various Network issues Questions web-payments-sdk	15	25	September 4, 2026
INVALID_CARD_DATA problem Questions cards-api	9	4695	September 4, 2026
Questions about Square Appointments API and mobile service operations in Japan Questions	1	6	September 4, 2026
How many active access token can exist at the same time? Questions oauth-api	0	2	September 4, 2026
Created an App but no sandbox test account was created Questions	3	14	September 4, 2026
DeleteSubscriptionAction returns HTTP 500, and an unexpected charge occurred after deleting a SWAP_PLAN action Questions subscriptions-api	1	8	September 4, 2026
Sandbox dashboard broken - can't create Team Members or manage Shifts/Schedules Questions sandbox	2	11	September 4, 2026
Modifier lists deleted automatically minutes to hours after creation (9+ Occurences) Questions catalog-api	5	22	September 4, 2026
MCP Allowlist Request - Dualentry.com MCP	4	32	September 4, 2026
Square App Marketplace Integration Review Timeline Questions	6	46	September 4, 2026
Duplicate booking.updated events via webhook Questions webhooks-api , booking-api	7	43	September 4, 2026
MCP AllowList Request jhax.ai MCP	3	32	September 4, 2026
Set pick-up date/time in Register check-out Questions	2	623	September 3, 2026
Nested modifiers now available in the Catalog API Announcements catalog-api	1	17	September 3, 2026
AfterPay not working on production Questions	2	16	September 3, 2026
Need help locating the correct square api credentials/code for website integration Questions	1	8	September 3, 2026
How do I get an API refund to keep the item category and the tax? Questions refunds-api	0	2	September 3, 2026
Mobile Payments SDK Questions	1	8	September 3, 2026
Customers created via API with creation_source: THIRD_PARTY that I didn't create — no CreateCustomer calls in my app's API Logs Questions	4	18	September 3, 2026
Apple Pay (Web Payments SDK) — SDK aborts sheet at merchant validation; domain verified, credentials fresh, cards working Questions	4	41	September 3, 2026
Not able to get into Developer Console Questions	1	10	September 3, 2026
How do I determine the processing (return) location for a cross-location refund via the API? Questions refunds-api	1	29	September 2, 2026
SearchLoyaltyRewards returns abnormal response for a single merchant Questions loyalty-api	2	37	September 2, 2026
Incorrect booking service title (outdated) from booking created with API Questions booking-api	3	52	September 1, 2026
Early access request — nested modifiers via Catalog API Questions orders-api , catalog-api	5	55	September 1, 2026
Sales tax incorrectly applied to some transactions Questions checkout-api	10	81	September 1, 2026
Online Pickup and Delivery Hours Questions	1	16	September 1, 2026
Requesting access to the Discount Codes API Questions	1	16	September 1, 2026