E12001 — SMSBodyTooLong

HTTP status: <span class="text-code bg-card rounded-sm border px-1 font-mono group-[&amp;]/code-block:rounded-none group-[&amp;]/code-block:border-none group-[&amp;]/code-block:bg-transparent group-[&amp;]/code-block:p-0">422
Type: <span class="text-code bg-card rounded-sm border px-1 font-mono group-[&amp;]/code-block:rounded-none group-[&amp;]/code-block:border-none group-[&amp;]/code-block:bg-transparent group-[&amp;]/code-block:p-0">validation_error
Name: <span class="text-code bg-card rounded-sm border px-1 font-mono group-[&amp;]/code-block:rounded-none group-[&amp;]/code-block:border-none group-[&amp;]/code-block:bg-transparent group-[&amp;]/code-block:p-0">SMSBodyTooLong

The message text is too long. An SMS is limited to 12 segments; shorten the text or split it across multiple messages.

What to do

Shorten the message text, or split it across multiple sends, so each message stays within the 12-segment limit, then send again.