getting error when uploading SignUpOrSignIn custom policy file, I want to include user identities with id token

I want to fetch the sign-in user's identities array from the tenant and include it in the id token (add in the RelyingParty outputclaim),Would like to know how to add user's properties mainly identities with id token.

   <ClaimType Id="identities">
    <DisplayName>Identities</DisplayName>
    <DataType>stringCollection</DataType>
  </ClaimType>                   
        
<ClaimsProvider>
  <DisplayName>Azure Active Directory</DisplayName>
  <TechnicalProfiles>
    <TechnicalProfile Id="AAD-UserReadUsingObjectId">
      <DisplayName>Azure Active Directory</DisplayName>
      <Protocol Name="Proprietary" Handler="Web.TPEngine.Providers.SelfAssertedAttributeProvider, Web.TPEngine, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
      <CryptographicKeys>
        <Key Id="issuer_secret" StorageReferenceId="B2C_1A_TokenSigningKeyContainer" />
      </CryptographicKeys>                 
      <InputClaims>
        <InputClaim ClaimTypeReferenceId="objectId" Required="true" />
      </InputClaims>
      <OutputClaims>
         <OutputClaim ClaimTypeReferenceId="identities" />
      </OutputClaims>
    </TechnicalProfile>
  </TechnicalProfiles>
</ClaimsProvider>    

 <RelyingParty>
<DefaultUserJourney ReferenceId="SignUpOrSignIn" />
<Endpoints>
  <!--points to refresh token journey when the app makes refresh token request-->
  <Endpoint Id="Token" UserJourneyReferenceId="RedeemRefreshToken" />
</Endpoints>
<TechnicalProfile Id="PolicyProfile">
  <DisplayName>PolicyProfile</DisplayName>
  <Protocol Name="OpenIdConnect" />
  <OutputClaims>
    <OutputClaim ClaimTypeReferenceId="displayName" />
    <OutputClaim ClaimTypeReferenceId="givenName" />
    <OutputClaim ClaimTypeReferenceId="surname" />
    <OutputClaim ClaimTypeReferenceId="objectId" PartnerClaimType="sub"/>
    
    <OutputClaim ClaimTypeReferenceId="identities"/>
    <OutputClaim ClaimTypeReferenceId="tenantId" AlwaysUseDefaultValue="true" DefaultValue="{Policy:TenantObjectId}" />
  </OutputClaims>   
  <SubjectNamingInfo ClaimType="sub" />
</TechnicalProfile>