Terms of Consent popup not showing at signup - azure-ad-b2c

Question

I am following this sample in order to enhance an existent custom policy. However, can't get prompted for the Terms of Conditions checkbox at local signup even though I've specified it as a required field on the output claims.
The technical profile:
<TechnicalProfile Id="LocalAccountSignUpWithLogonEmail-HasEmailFlagged">
<DisplayName>Sign Up with Local Email</DisplayName>
<Protocol Name="Proprietary" Handler="Web.TPEngine.Providers.SelfAssertedAttributeProvider, Web.TPEngine, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
<Metadata>
<Item Key="IpAddressClaimReferenceId">IpAddress</Item>
<Item Key="ContentDefinitionReferenceId">api.localaccountsignup</Item>
<Item Key="language.button_continue">Sign Up</Item>
<Item Key="EnforceEmailVerification">False</Item>
</Metadata>
<CryptographicKeys>
<Key Id="issuer_secret" StorageReferenceId="B2C_1A_TokenSigningKeyContainer" />
</CryptographicKeys>
<InputClaimsTransformations>
<InputClaimsTransformation ReferenceId="GetCurrentDateTime" />
</InputClaimsTransformations>
<InputClaims>
<InputClaim ClaimTypeReferenceId="email" />
<InputClaim ClaimTypeReferenceId="givenName" />
<InputClaim ClaimTypeReferenceId="extension_termsOfUseConsentChoice" DefaultValue="AgreeToTermsOfUseConsentNo" />
</InputClaims>
<DisplayClaims>
<DisplayClaim ClaimTypeReferenceId="email" Required="true" />
<DisplayClaim ClaimTypeReferenceId="givenName" Required="true" />
<DisplayClaim ClaimTypeReferenceId="password" Required="true" />
</DisplayClaims>
<OutputClaims>
<OutputClaim ClaimTypeReferenceId="objectId" />
<OutputClaim ClaimTypeReferenceId="executed-SelfAsserted-Input" DefaultValue="true" />
<OutputClaim ClaimTypeReferenceId="authenticationSource" />
<OutputClaim ClaimTypeReferenceId="newUser" />
<OutputClaim ClaimTypeReferenceId="password" />
<OutputClaim ClaimTypeReferenceId="givenName"/>
<OutputClaim ClaimTypeReferenceId="displayName"/>
<OutputClaim ClaimTypeReferenceId="email" PartnerClaimType="Email" />
<OutputClaim ClaimTypeReferenceId="reenterPassword" Required="true" />
<OutputClaim ClaimTypeReferenceId="extension_termsOfUseConsentChoice" Required="true" />
</OutputClaims>
<OutputClaimsTransformations>
<OutputClaimsTransformation ReferenceId="CopyGivenName" />
</OutputClaimsTransformations>
<ValidationTechnicalProfiles>
<ValidationTechnicalProfile ReferenceId="AAD-UserWriteUsingLogonEmail" />
<ValidationTechnicalProfile ReferenceId="AAD-WriteUserHasPassword" />
</ValidationTechnicalProfiles>
<UseTechnicalProfileForSessionManagement ReferenceId="SM-AAD"/>
</TechnicalProfile>

Answer 1

It turns out that I was using DisplayClaim and OutputClaim the wrong way. The following fixed the issue.
<DisplayClaims>
<DisplayClaim ClaimTypeReferenceId="email" Required="true" />
<DisplayClaim ClaimTypeReferenceId="givenName" Required="true" />
<DisplayClaim ClaimTypeReferenceId="password" Required="true" />
<DisplayClaim ClaimTypeReferenceId="reenterPassword"
<DisplayClaim ClaimTypeReferenceId="extension_termsOfUseConsentChoice" Required="true" />
Required="true" />
</DisplayClaims>
<OutputClaims>
<OutputClaim ClaimTypeReferenceId="objectId" />
<OutputClaim ClaimTypeReferenceId="executed-SelfAsserted-Input" DefaultValue="true" />
<OutputClaim ClaimTypeReferenceId="authenticationSource" />
<OutputClaim ClaimTypeReferenceId="newUser" />
<OutputClaim ClaimTypeReferenceId="password" />
<OutputClaim ClaimTypeReferenceId="givenName"/>
<OutputClaim ClaimTypeReferenceId="displayName"/>
<OutputClaim ClaimTypeReferenceId="email" PartnerClaimType="Email" />
<OutputClaim ClaimTypeReferenceId="extension_termsOfUseConsentChoice" />
</OutputClaims>