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Why am I getting an error message when setting up SMS?

  • May 28, 2023
  • 3 replies
  • 425 views

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Hey there, 

 

I keep getting an error message when I try and set up SMS messaging in Klaviyo. For some reason I was able to set it all up during the tutorial but I was never able to verify a phone number to actually use. 

I try and redo it all now and I am unable to get past a certain point in signing up. 

 

This is the error I keep receiving . I get it after filling out the company information part of the setup.

 

Any help is appreciated!

 

Thank you

Best answer by Taylor Tarpley

Hi there @MelanieHargrove

 

Thanks for sharing your question with us, happy to help! 

 

Do you mind sharing if you’re still experiencing this issue? Sometime this can occur as a temporary issue and can be fixed by attempting the following troubleshootings steps: 

 

  • Log out of Klaviyo
  • Clear cache and cookies in the current browser
  • Exit or restart the browser
  • Log back in and click "Activate"

 

Thanks for participating in the. Community!

-Taylor 

3 replies

Taylor Tarpley
Community Manager
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  • Community Manager
  • Answer
  • May 30, 2023

Hi there @MelanieHargrove

 

Thanks for sharing your question with us, happy to help! 

 

Do you mind sharing if you’re still experiencing this issue? Sometime this can occur as a temporary issue and can be fixed by attempting the following troubleshootings steps: 

 

  • Log out of Klaviyo
  • Clear cache and cookies in the current browser
  • Exit or restart the browser
  • Log back in and click "Activate"

 

Thanks for participating in the. Community!

-Taylor 


  • Contributor I
  • October 10, 2025

hello, i am getting this very same error message and I’ve tried everything, especially tried activating sms several times and all i get is the same error


Byrne C
Community Manager
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  • Community Manager
  • October 14, 2025

Hi ​@oracle01,

This issue can happen sometimes if your Organization name contains too many numbers or invalid characters. Your organization name is used to create a Branded Sender ID (one of the mobile sending numbers), so I’d recommend ensuring that there are no characters like a trademark/copyright symbol in your organization name.

Additionally, after you’ve ruled this out, could you try setting this up in incognito mode, to see if you’re dealing with a browser issue? Finally, if that doesn’t work, I’d encourage you to reach out to Klaviyo.com/support, and our support team can take a closer look at this for you to see why this is happening.