sequence-diagram-1-click-signup-api

sequenceDiagram
    actor U as User
    participant C as Customer
    participant V as Verified

    Note left of U: 1. Prompt user for inputs.
    C ->>+ U: Collect verified phone, challenge, and consent
    U ->>- C: Provide verified phone, challenge, and consent
    Note left of U: 2. Call POST /1-click.
    C ->>+ V: Call POST /1-click
    alt Additional info required
        V -->>- C: OCE011 error code
        C ->>+ U: Show DOB/SSN4 field(s)
        U ->>- C: Enter DOB/SSN4
        C ->>+ V: Call POST /1-click with DOB/SSN4
        alt Additional info mismatched
            V -->>- C: OCE012 error code
            C ->>+ U: Show DOB/SSN4 field(s)
            U ->>- C: Enter DOB/SSN4
            C ->>+ V: Call POST /1-click with DOB/SSN4
            break No credentials found
                V -->>- C: OCE013 error code
                C ->>+ U: Take user to manual signup
            end
        end
    end
    V ->> V: Source data (credentials and metadata)
    V -->> C: Return data
    Note left of U: 3. Have user confirm data.
    C ->>+ U: Display credentials
    U ->>- C: Confirm credentials