Welcome to the RingCentral Community

Make sure to review our Terms of Use and Community Guidelines.

Please note the community is currently under maintenance and is read-only.

Home » Developers

SMS-RC-503 while sending A2P message.

Tags: high-volume sms

Aug 12, 2021 at 6:41am • 2 replies • 0 likes

Mehmood Anjum

We are getting SMS-RC-503 while sending sms from A2P send sms developer reference.
Guide us about steps we can take to fix this.

2 Answers

Phong Vu answered on Aug 12, 2021 at 7:19am

Have you used this form to request for A2P number provisioning? If not, please do so. Otherwise, click here to create a support ticket and provide the phone number and your account id or name.

Anirban answered on Aug 12, 2021 at 6:48am

If you see the error code details: https://ringcentral-api-docs.readthedocs.io/en/latest/messaging/sms/high-volume/handling-errors/

It's written as "RingCentral provisioning error. Phone number is incorrectly provisioned by RingCentral in upstream. "

You can contact Dev support team to fix

A new Community is coming to RingCentral!

Posts are currently read-only as we transition into our new platform.

We thank you for your patience
during this downtime.

Try Workflow Builder

Did you know you can easily automate tasks like responding to SMS, team messages, and more? Plus it's included with RingCentral Video and RingEX plans!

Try RingCentral Workflow Builder

PRODUCTS
RingEX
Message
Video
Phone

OPEN ECOSYSTEM
Developer Platform
APIs
Integrated Apps
App Gallery
Developer support
Games and rewards

RESOURCES
Resource center
Blog
Product Releases
Accessibility

QUICK LINKS
App Download
RingCentral App login
Admin Portal Login
Contact Sales