My apologies if this is an obvious question, but i created a server-to-server sms app that allows users at my company to schedule future text messages, it works fine if I use it myself, but when run for other team members it gets a status code 400 with the following error: “code”:135,“message”:“You…

I run into the same issue. Have you get it sorted.

Not entirely, the partial fix workaround I found was making an account level general app and having the user authenticate themselves.

@Kyle1 , Thank you for writing in the Zoom Developer Forum. Let me take a look at this and get back to you. In the meantime, can you share more information about your use case? This will help identify if there may be another implementation approach you can consider.

We use the sms api to integrate to notion notification system. I’m using the admin account to create the server to server api app. However, I couldn’t find the scopes below phone:write:admin,phone:write,phone_sms:write,phone_sms:write:admin

Hi Donte, We are using the API to give our team members the ability to send SMS messages via a custom HubSpot UI extension

Related: Can't Find phone:write and phone_sms:write Scopes in OAuth App for SMS API

@Kyle1 @tamn @Victor_Lam To send SMS messages on behalf of users, you should create a general user-managed app rather than a server-to-server application. Server-to-server apps only work for messages sent on your own behalf, not for other users in your account. Users must authenticate and grant per…

Hi @donte.zoom , I’m already using a general, user-managed app as stated in my response in the other thread Can't Find phone:write and phone_sms:write Scopes in OAuth App for SMS API - #2 by tamn The scopes are simply not selectable/do not appear in searches, as per the image I sent.

I can’t see the “phone:write:sms” scope on “general user-managed” settings, either. I have an Administrator user, and the SMS service is activated. I even got a “Programmable APIs Service Endpoint ID“. Do you have any idea what I need to activate the scope?

Missing Scopes for phone_sms:write:admin

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tamn (nktnet) July 14, 2025, 5:24am 9

Can't Find phone:write and phone_sms:write Scopes in OAuth App for SMS API

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Can't Find phone:write and phone_sms:write Scopes in OAuth App for SMS API API and Webhooks phone , api	11	388	January 27, 2026
Missing scope "phone:write:sms" despite having License & Third-Party API enabled API and Webhooks	2	26	February 4, 2026
Cannot find phone_sms:write scope for POST /phone/sms/messages in Server‑to‑Server OAuth app Phone	1	23	March 7, 2026
Sending text message via API works for my account, but not others Phone api	7	168	September 16, 2025
SMS API Error 135: "You cannot have access to another user" with Admin-Managed App API and Webhooks	3	119	September 4, 2025

Missing Scopes for phone_sms:write:admin

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