The identifier type must be one of the supported values

The requirementstatement

Where a business-registration identifier type is declared, it must be one of EIN, DUNS, CBN, CN, ACN, CIN, VAT, VATRN, RN or Other.

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.business_registration_identifier
Where it liveslayer: BrandBRAND
How Ekas settles itdetectability: DeterministicDETERMINISTIC; Settled in code from the values you submitted. No model involved, no judgement call, same answer every time.
What the fix involvesfailureClass: Fix the fieldRETRY_FIELD; A better value in the form fixes it. Ekas can rewrite it and re-check.
Who requires itauthorities: Twilio
When it appliesapplicabilityText: Applies when the brand is NOT a sole proprietor.

Why this rule existsrationale

The type tells the registry which register to look the number up in, so an unrecognised value does not degrade to a best guess — the lookup never runs and the brand stays unverified. Integrations produce this by passing through whatever their own CRM calls the field, and the value looks perfectly reasonable right up to the point where nothing happens.

How to fix itremediation

Set the identifier type to the code for the document the number came from: EIN for a US employer identification number, CBN for a Canadian business number, VAT or VATRN for a European VAT registration, and Other only when none of them fits. Done when the value is one of the ten codes, in upper case.

A compliant exampleexample

business_registration_identifier: EIN · ein: 12-3456789

Common mistakespitfalls

"TAX_ID", "FEIN" and "Federal Tax ID" all mean EIN and are all rejected — the enum takes the short code, not the name people use.

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	30701	Yes
Twilio	30799	Yes

Notesnotes

A US EIN passes without an explicit type because the value is unambiguous and TCR infers it, so the check only reports a value that is present and outside the enum. Declaring it anyway is worth doing: the Twilio Trust Hub API takes the field directly and rejects the submission when it is missing.

Rules you will hit next

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

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 BRD-003Legal name must carry its exact entity suffix as filedBlockingBLOCKING BRD-008Legal name must not carry an appended personal name or roleBlockingBLOCKING BRD-009The legal name field takes the legal name, not the trading nameBlockingBLOCKING BRD-011A legal business name may back only one brand across the whole registryBlockingBLOCKING

All brand rules

BRD-023 is one of 196 brand rules in the 915-rule 10DLC registry. Free to cite under CC BY 4.0.