Sumsub Know Your Customer (KYC) Integration Guide

5. Proof of Address Behavior

Sumsub treats address verification as one PROOF_OF_RESIDENCE step. For this level, there are two possible paths.

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Path A: identity document Path B: dedicated PoA PoA document categories Next steps

Path A

Identity Document Satisfies PoA

When the linked PoA preset allows it, certain identity documents can satisfy proof of address without a separate upload. This is common for identity documents that show a printed residential address, such as some driver's licenses.

Integration Rule

1Upload the identity document first.
2Call GET /resources/applicants/{applicantId}/requiredIdDocsStatus.
3If PROOF_OF_RESIDENCE is already satisfied, skip the dedicated PoA upload.

Path B

Dedicated PoA Document Upload

If PROOF_OF_RESIDENCE remains unsatisfied after identity upload, upload a separate document using API idDocType: UTILITY_BILL.

{
  "idDocType": "UTILITY_BILL",
  "country": "DEU"
}

UTILITY_BILL is the API label for the dedicated PoA upload slot. It does not mean only electricity or water bills are accepted. The linked PoA preset determines which real-world document categories pass verification.

5.1 PoA Document Categories That May Be Enabled in the Preset

Category Detected in Check Results	Possible Subtypes	Examples
Government organization	`statementvoterRegistrationtaxBillother`	Benefit letters, tax assessments, voter registration, vehicle registration.
Utility provider	`utilityBilltelecomother`	Electricity, water, gas, heating, internet, landline TV bills.
Bank	`bankStatementbankLetterother`	Bank statements, bank correspondence, mortgage statements.
Mobile operator	Category-level option	Mobile phone bills, if enabled.
Other	`leaseother`	Employer address letters, rental agency bills, signed lease agreements.

After verification, GET /resources/checks/latest?type=POA&applicantId={id} may return poaCheckInfo.companyContact with the detected category and subtype.

Next steps

Continue to KYC Results for how GREEN and RED outcomes are delivered and interpreted after verification completes.