Sole proprietor mobile number has a reuse limit

The requirementstatement

A mobile number used for sole proprietor OTP verification may back at most three brand registrations, and must not be a CPaaS-issued number.

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: brand.phone
Where it liveslayer: BrandBRAND
How Ekas settles itdetectability: External recordEXTERNAL_DATA; The fact that settles it lives in a register we cannot query, such as the IRS file, a postal database, or another provider’s tenant. Reported as a warning with the evidence to check, not as a pass.
What the fix involvesfailureClass: Wait on someone elseTERMINAL_EXTERNAL; Needs an external system or a waiting period, such as IRS propagation, a vetting result, or a carrier queue.
Who requires itauthorities: TwilioTCR
When it appliesapplicabilityText: Applies when the brand is a sole proprietor.

Why this rule existsrationale

The verified mobile number is the only real identity check the sole proprietor tier has, so its reuse is capped and CPaaS-issued numbers are refused — otherwise one operator could mint unlimited "individuals". The 24-hour reply window is short and unforgiving.

How to fix itremediation

Use a personal mobile number that can receive the verification text, is not issued by a CPaaS provider, and has not already backed three registrations. The owner must reply YES within 24 hours.

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	30750	Yes
Twilio	30751	Yes
Twilio	30752	Yes

Check this yourselfattestation

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

Is the verification number a personal handset the owner will have with them, not issued by a messaging provider, and used on fewer than three brands already?

1Confirm the number is on a consumer mobile carrier — not one bought from Twilio, Telnyx, Bandwidth or any messaging platform, including the console you are registering in.
2Ask the owner how many sole proprietor brands they have registered on this number. Three is the ceiling across the whole registry.
3Make sure the owner is expecting the verification text and can reply YES within 24 hours of submission.

What wrong looks like: The number was provisioned in the same console being used to register, so it verifies as CPaaS-issued and is refused; or it is a fourth registration, which fails against a count nobody outside TCR can see.

Notesnotes

Off-platform: the reuse count and the CPaaS origin of a number both live in TCR, which we cannot query, so this rule can only ever warn. The user has to confirm for themselves that the number is a real personal handset and has not already backed three brands, and then be holding it when the OTP arrives — the 24-hour window starts at submission and cannot be restarted without a new registration.

Rules you will hit next

4 other rules read brand.phone. Fixing one field to satisfy a single rule is how a resubmission trades one rejection for another, so read these before you change anything.

BRD-102A brand support phone number is requiredBlockingBLOCKING BRD-103The support phone must be in E.164BlockingBLOCKING BRD-104The support phone must reach the businessHighHIGH BRD-106The business phone should be findable in a web searchMediumMEDIUM BRD-001A legal company name is required for every entity but a sole proprietorBlockingBLOCKING BRD-002Legal name must match the IRS record for the EINBlockingBLOCKING

All brand rules

BRD-072 is one of 196 brand rules in the 915-rule 10DLC registry. Free to cite under CC BY 4.0.