> This page is for Platform.

> Fetch clean Markdown by appending `.md` to any page URL under https://signalwire.com/docs or requesting it with the HTTP header `Accept: text/markdown`. The root index at https://signalwire.com/docs/llms.txt lists the available documentation indexes.

## Fixed: Using `send_sms` in a messaging SWML script returned an unclear error

Using the voice-only [`send_sms`](/docs/swml/reference/calling/send-sms) method in a
[messaging SWML](/docs/swml/reference/messaging) script returned an error message that didn't
explain what went wrong. This is now fixed.