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	393	July 12, 2026
Welcome to Square Developer Forums Site Feedback	8	13154	October 24, 2025
Callback Url Error Does Not Match Any Expected Callback Urls Questions point-of-sale-api	0	1	August 6, 2026
Why do all in-app Apple Pay payments decline with GENERIC_DECLINE when the same cards succeed via keyed entry on the same seller?" Questions	4	50	August 5, 2026
Is the Nested Modifiers beta supported by Square APIs? Questions orders-api , catalog-api	1	11	August 5, 2026
Square Franchise API Support Questions	2	13	August 5, 2026
Idempotency Issue Causing Duplicate Payment Attempts Through the Square Payments API Integration Questions	3	33	August 5, 2026
Not getting data from https://developer.squareup.com/explorer/square_2026-07-15/payouts-api/list-payouts Questions payouts-api	12	54	August 5, 2026
Apple Pay web domain verification fails with "partial response" despite confirmed complete delivery Questions	4	56	August 5, 2026
Unable to Update Web Payments SDK Allowed Domains Questions web-payments-sdk	2	22	August 5, 2026
Delist my app from the Marketplace Questions	2	28	August 4, 2026
UpdateBooking rejects appointment_segments on card-paid bookings since ~2026-07-17 (reservation_segments: "no order line item with uid …") Questions booking-api	7	35	August 4, 2026
Sandbox Dashboard Modifier Creation Page Not Loading Questions dashboard	4	28	August 4, 2026
Missing modifier_list_info for Combo Items and Undocumented combo_type_details Field in Catalog API Questions	9	55	August 4, 2026
.NET SDK namespace changes from 44.0.0 Questions net , sdk	1	12	August 4, 2026
Question About Gift Card Usage After Linking to a Customer Questions payments-api , gift-cards-api	1	13	August 4, 2026
Request for Instructions on Initiating QR Code Payments Questions terminal-api	2	17	August 4, 2026
Custom_attribute_values on an ITEM silently don't persist (sandbox) Questions	1	17	August 3, 2026
Is there an equivalent supported mechanism for Square Register and Square Handheld? Questions orders-api , terminal-api , payments-api , devices-api	7	52	August 3, 2026
How do I get the response code (200, 400 etc) from PHP SDK calls? Questions payments-api , web-payments-sdk	0	13	August 1, 2026
Square Dev SandBox Questions sandbox	2	28	July 31, 2026
Please reset or enable Developer Console access for this seller account Questions payments-api	3	23	July 31, 2026
Help! I'm getting unauthorized on $client->payments->create(...) Questions payments-api , sandbox , web-payments-sdk	2	20	July 31, 2026
Implicit sort order in sms / email notification system Questions	1	12	July 31, 2026
"Create modifier set" feature does not load on Sandbox Questions sandbox	1	16	July 31, 2026
Mobile Payments SDK 2.6.0 (iOS) — reader pairs, then "Unable to establish a secure connection to Square" Questions web-payments-sdk	1	23	July 31, 2026
Follow-up: 502 Bad Gateway (Payments API) – No payment_id Returned After Successful Charge Questions	5	38	July 30, 2026
MFi approval request for Givanta Questions in-app-payments-sdk , reader-sdk , sdk , mobile-payments-sdk	1	9	July 30, 2026
Add VIP Tiers API Support Feature Requests	1	14	July 30, 2026
Online not sending info to ship station Site Feedback orders-api	4	27	July 30, 2026