Azure b2c saml response error - AuthRequest does not have assertion consumer service URL

i need to setup azure b2c application with SAML protocol. but when trying to sign in, i received below saml response error called "Application registered corresponding to IssuerUri "Abc" in AuthRequest does not have assertion consumer service URL"

following are the steps that i followed,

1 - created a RSA policy key called "B2C_1A_SPSAMLApp"

2 - created new user flow for email signin

• user flow name - B2C_1_SAML_SIGNIN

3 - created a b2c application called "IMPSAML"

• redirect url - https://abc.com/api-gateway/auth-method/acs

4 - uploaded TrustFrameworkBase.xml

• used offical github base xml file and update below xml tag with newly created policy key. github source link
• <Key Id="issuer_secret" StorageReferenceId="B2C_1A_SPSAMLApp" />
• <Key Id="issuer_refresh_token_key" StorageReferenceId="B2C_1A_SPSAMLApp" />

5 - uploaded below TrustFrameworkExtensions.xml file

<?xml version="1.0" encoding="utf-8" ?>
<TrustFrameworkPolicy 
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
  xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
  xmlns="http://schemas.microsoft.com/online/cpim/schemas/2013/06" 
  PolicySchemaVersion="0.3.0.0" 
  TenantId="abc.onmicrosoft.com" 
  PolicyId="B2C_1A_TrustFrameworkExtensions" 
  PublicPolicyUri="http://abc.onmicrosoft.com/B2C_1A_TrustFrameworkExtensions">
  <BasePolicy>
    <TenantId>abc.onmicrosoft.com</TenantId>
    <PolicyId>B2C_1A_TrustFrameworkBase</PolicyId>
  </BasePolicy>
  <BuildingBlocks>
  </BuildingBlocks>
  <ClaimsProviders>
    <ClaimsProvider>
      <DisplayName>IMPSAML</DisplayName>
      <TechnicalProfiles>
        <TechnicalProfile Id="IMPSAML">
          <DisplayName>Sales Application</DisplayName>
          <Protocol Name="SAML2"/>
          <OutputTokenFormat>SAML2</OutputTokenFormat>
          <CryptographicKeys>
            <Key Id="SamlAssertionSigning" StorageReferenceId="B2C_1A_SPSAMLApp"/>
            <Key Id="SamlMessageSigning" StorageReferenceId="B2C_1A_SPSAMLApp"/>
          </CryptographicKeys>
          <InputClaims/>
          <UseTechnicalProfileForSessionManagement ReferenceId="SM-Saml-issuer"/>
        </TechnicalProfile>
        
        <TechnicalProfile Id="SM-Saml-issuer">
          <DisplayName>Session Management Provider</DisplayName>
          <Protocol Name="Proprietary" Handler="Web.TPEngine.SSO.SamlSSOSessionProvider, Web.TPEngine, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"/>
        </TechnicalProfile>
      </TechnicalProfiles>
    </ClaimsProvider>
  </ClaimsProviders>
</TrustFrameworkPolicy>

6 - uploaded below SPSAMLAPP.xml file for user signin

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<TrustFrameworkPolicy
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns="http://schemas.microsoft.com/online/cpim/schemas/2013/06"
  PolicySchemaVersion="0.3.0.0"
  TenantId="abc.onmicrosoft.com"
  PolicyId="B2C_1A_SPSAMLApp"
  PublicPolicyUri="http://abc.onmicrosoft.com/B2C_1A_SPSAMLApp">

  <BasePolicy>
    <TenantId>abc.onmicrosoft.com</TenantId>
    <PolicyId>B2C_1A_TrustFrameworkExtensions</PolicyId>
  </BasePolicy>

  <UserJourneys>
    <UserJourney Id="B2C_1_SAML_SIGNIN">
      <OrchestrationSteps>
        <OrchestrationStep Order="1" Type="SendClaims" CpimIssuerTechnicalProfileReferenceId="IMPSAML">
        </OrchestrationStep>
      </OrchestrationSteps>
    </UserJourney>
  </UserJourneys>

  <RelyingParty>
    <DefaultUserJourney ReferenceId="B2C_1_SAML_SIGNIN" />
    <TechnicalProfile Id="PolicyProfile">
      <DisplayName>PolicyProfile</DisplayName>
      <Protocol Name="SAML2"/>
      <Metadata>
        <Item Key="IssuerUri">https://abc.b2clogin.com/abc.onmicrosoft.com/B2C_1A_SPSAMLApp</Item>
      </Metadata>
      <OutputClaims>
        <OutputClaim ClaimTypeReferenceId="email" DefaultValue="" />
      </OutputClaims>
        <SubjectNamingInfo ClaimType="http://schemas.microsoft.com/identity/claims/objectidentifier" Format="urn:oasis:names:tc:SAML:2.0:nameid-format:persistent" ExcludeAsClaim="true"/>
    </TechnicalProfile>
  </RelyingParty>
</TrustFrameworkPolicy>

7 - updated menifest.json

{
  "id": "xxxxxxxxxxxxxxxxxxx",
  "acceptMappedClaims": null,
  "accessTokenAcceptedVersion": 2,
  "addIns": [],
  "allowPublicClient": null,
  "appId": "xxxxxxxxxxxxxxxxxxx",
  "appRoles": [],
  "oauth2AllowUrlPathMatching": false,
  "createdDateTime": "2023-07-28T07:24:33Z",
  "description": null,
  "certification": null,
  "disabledByMicrosoftStatus": null,
  "groupMembershipClaims": null,
  "identifierUris": [
    "Abc"
  ],
  "informationalUrls": {
    "termsOfService": null,
    "support": null,
    "privacy": null,
    "marketing": null
  },
  "keyCredentials": [],
  "knownClientApplications": [],
  "logoUrl": null,
  "logoutUrl": null,
  "name": "IMPSAML",
  "notes": null,
  "oauth2AllowIdTokenImplicitFlow": false,
  "oauth2AllowImplicitFlow": false,
  "oauth2Permissions": [],
  "oauth2RequirePostResponse": false,
  "optionalClaims": null,
  "orgRestrictions": [],
  "parentalControlSettings": {
    "countriesBlockedForMinors": [],
    "legalAgeGroupRule": "Allow"
  },
  "passwordCredentials": [],
  "preAuthorizedApplications": [],
  "publisherDomain": "abc.onmicrosoft.com",
  "replyUrlsWithType": [
    {
      "url": "https://abc.com/api-gateway/auth-method/acs",
      "type": "Web"
    },
    {
      "url": "https://samltestapp2.azurewebsites.net/SP/AssertionConsumer",
      "type": "Web"
    }
  ],
  "requiredResourceAccess": [],
  "samlMetadataUrl": null,
  "signInUrl": null,
  "signInAudience": "AzureADMyOrg",
  "tags": [],
  "tokenEncryptionKeyId": null
}