Hi everyone, Two months ago, my company requested a toll-free number with High Volume SMS capability. After a long wait, support confirmed that the number is now enabled for this feature.

However, when I check the features of this number via the API, I only see CallerId and SmsSender — there's no A2PSmsSender.

We reached out to support again, and they mentioned that they tested the number and confirmed that it should be capable of sending mass messages.

But when we try to send a request to /restapi/v1.0/account/~/a2p-sms/batches, we get the following error: Parameter rfrom] value is invalid.

Could someone help clarify why this might be happening? Is there something else that needs to be enabled on the toll-free number, or are we possibly using the wrong sender ID?

Thanks in advance for any guidance!