senderName_not_registered

<senderName> should contain the sender's IPAWS registered agency name.

<senderName> should be the sending agency's own registered name. This only catches the clearly-wrong cases — empty, an email address, a URL, or a placeholder like "test"/"n/a" — not yet whether the name matches a known registry entry. Unrelated agencies sometimes share a generic value from a common alert-origination vendor (e.g. "ASHERGROUP" for Asher Group's Hyper-Reach customers), or a generic senderName like "Public Alert System" may be reused across dozens of unrelated counties and states.

A clear indication of the source of your alert helps people decide that the alert is valid and applied to them. Providing it helps improve your alert's effectiveness.