A method you use and did not declare is the one that will be found

The requirementstatement

Every opt-in method actually in use must appear in the submission; none may be left out.

Severityseverity: BlockingBLOCKINGBreaking this rule gets the submission rejected. There is no partial credit.
When it bitesphase: Gates approvalapprovalGet this wrong and the brand or campaign is refused at registration.
What is checkedobject: declared opt-in methods vs the flows actually in use
Where it liveslayer: CampaignCAMPAIGN
How Ekas settles itdetectability: Human checkHUMAN; Only someone holding the document or making the call can settle it. Ekas tells you exactly what to look at.
What the fix involvesfailureClass: Supply evidenceTERMINAL_EVIDENCE; Needs proof only you hold: a screenshot, a recording, a scan of the form people signed.
Who requires itauthorities: Twilio
When it appliesapplicabilityText: Applies to every 10DLC registration.

Why this rule existsrationale

The undeclared method is the one generating complaints, because it is the one nobody applied the disclosure checklist to. Businesses omit them without deciding to: the web form is what the registration form asks about, and the fact that the sales team also collects numbers at trade shows never comes up until a recipient asks where the number came from.

How to fix itremediation

Ask everyone who could add a number to the list how they do it — sales, support, retail, events, the website — and declare every route that turns up. Done when nobody in the business can name a way onto the list that is not in the submission.

Provider rejection codescodes

The code you get back when this rule is what failed, and whether that provider lets you resubmit.

Provider	Code	Resubmit
Twilio	30909	Yes

Check this yourselfattestation

No tool can settle this one for you. Here is the check, and what wrong looks like.

Has everyone who can add a number to this list been asked how they do it — and does every route they named appear in the submission?

1Canvass sales, support, retail, events and the website. The web form is what the registration form asks about; the trade-show clipboard never comes up.
2Add every route that surfaces to the declared methods.
3Done when nobody in the business can name a way onto the list that is not in the submission.

What wrong looks like: The undeclared method is the one generating complaints, because it is the one nobody applied the disclosure checklist to. A pass here means nobody has been asked, not that nothing was omitted.

Notesnotes

The mirror of CMP-062, and the half of the pair no payload can settle: a method absent from the submission is also absent from everything we can read. The user has to canvass their own team and add whatever surfaces; we cannot check the answer, so a PASS here means nobody has been asked rather than that nothing was omitted, and the product must say so when it reports one.

Rules you will hit next

Other campaign rules at the same severity. A registration is judged as a whole, not rule by rule.

CMP-003Message flow must not begin or end with whitespaceBlockingBLOCKING CMP-017Every mandatory campaign attribute must be explicitly setBlockingBLOCKING CMP-024Registration fields must be written in EnglishBlockingBLOCKING CMP-028Opt-in evidence must be a JPG, PNG or PDF under 500 KBBlockingBLOCKING CMP-035The description must describe this programme, not messaging in generalBlockingBLOCKING CMP-037The description must name the business that sends the messagesBlockingBLOCKING

All campaign rules

CMP-063 is one of 94 campaign rules in the 915-rule 10DLC registry. Free to cite under CC BY 4.0.