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# July 30, 2026

## Changed

### A sole proprietor 10DLC registration now gives a `vertical`

`POST /api/v1/numbers/{id}/10dlc` requires a new `vertical` on the `brand` when `kind` is
`sole_proprietor` — the trade the brand operates in. The carrier registry asks for it on every sole
proprietor brand, and the earlier form didn't collect it.

It is the sole proprietor's counterpart to a business registration's `businessIndustry`, but **the two
take different values**: the registry validates them against separate vocabularies. `PROFESSIONAL` is a
vertical, `PROFESSIONAL_SERVICES` is an industry, and `TRAVEL`, `MEDIA`, `TELECOMMUNICATIONS`,
`RELIGION`, `ONLINE`, `NOT_FOR_PROFIT`, `AUTOMOTIVE` and `BANKING` are industries with no vertical at
all. Sending an industry code where a vertical belongs is rejected.

A business registration is unchanged and takes no `vertical`.

See [Register a US number for 10DLC](/guides/manage-phone-numbers#register-a-us-number-for-10dlc) for
the field lists.