> ## Documentation Index > Fetch the complete documentation index at: https://docs.fatorly.com/llms.txt > Use this file to discover all available pages before exploring further. # Kinds of taxpayer > What onboarding looks like if you're VAT-registered, Corporate Tax only, or a member of a VAT group. The details the FTA returns at step 2 depend on how your business is registered. All three cases below onboard successfully — but two of them show something that looks wrong at first glance and isn't. ## VAT-registered business The straightforward case. The FTA returns your legal names, your **VAT TRN**, and the effective date of registration. Nothing needs explaining. ## Corporate Tax only — no VAT TRN If you're registered for Corporate Tax but not for VAT, the FTA returns your legal type and legal names, and leaves **VAT TRN and Effective Date of Registration empty**. Review and Confirm for a Corporate Tax-only business, with the VAT TRN and effective date fields empty **This is correct — don't be alarmed by the blank fields.** You have no VAT registration, so there is no TRN to show. The form accepts it, and onboarding completes normally. Your e-invoicing identity does not depend on having a TRN. ## Member of a VAT group — the TRN won't be yours If you're a member of a VAT group, the FTA returns the **group's** TRN, not the one on your own registration. The two are different numbers, and the effective date is the group's too. Review and Confirm for a VAT group member, showing the group's TRN rather than the member's own The TRN shown here can differ from the one on your own EmaraTax registration overview. We display exactly what the FTA's verification returns — the field is non-editable and we do not alter it. ## Why your TIN is what matters Whichever of the three you are, your identity on the e-invoicing network is minted from your **TIN**: ``` 0235: ``` Never from the TRN. That is what makes the two cases above harmless — a missing TRN or a group TRN changes nothing about how invoices are addressed to you. Your counterparties route to your TIN-based identifier, and so does everyone's lookup of your business on the network. If you're checking your own registration on the network and it doesn't resolve, look it up as `0235:` followed by your **TIN**. Looking it up by TRN will not find you — that identifier was never created.