The response from the identity provider is not valid - saml-2.0

Question

saml20.implementation.SAMLFeedbackException: The response from the identity provider is not valid.
Trying to configure SAML2.0 using WSO2 5.4.1 Identity Server
Here is the Metadata file from WSO2 IS.
<?xml version="1.0" encoding="UTF-8"?><EntityDescriptor
xmlns="urn:oasis:names:tc:SAML:2.0:metadata" entityID="localhost">
<IDPSSODescriptor
protocolSupportEnumeration="urn:oasis:names:tc:SAML:2.0:protocol"
validUntil="2018-02-28T06:02:51.018Z"><KeyDescriptor use="signing"><KeyInfo
xmlns="http://www.w3.org/2000/09/xmldsig#"><X509Data>
<X509Certificate>
MIIDSTCCAjGgAwIBAgIEAoLQ/TANBgkqhki....WCCq4ZuXl6wVsUz1iE61suO5yWi8=
</X509Certificate></X509Data></KeyInfo></KeyDescriptor><SingleLogoutService
Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect"
Location="https://localhost:9443/samlsso"
ResponseLocation="https://localhost:9443/samlsso"/>
<NameIDFormat>urn:oasis:names:tc:SAML:1.1:nameid-
format:unspecified</NameIDFormat><SingleSignOnService
Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST"
Location="https://localhost:9443/samlsso"/><SingleSignOnService
Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect"
Location="https://localhost:9443/samlsso"/></IDPSSODescriptor>
</EntityDescriptor>
Below file is SP generated from SAML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<md:EntityDescriptor entityID="http://localhost:7337/"
xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata">
<md:SPSSODescriptor
protocolSupportEnumeration="urn:oasis:names:tc:SAML:2.0:protocol">
<md:KeyDescriptor>
<ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
<ds:X509Data>
<ds:X509Certificate>
MIIDNjCCAh6gAwIBAgI....7YzPhQmQo7pVpn1YLvlNk
IJyZ9RkmZyI+h6ayztkOgc+scflN/j2fdDOufg==</ds:X509Certificate>
</ds:X509Data>
</ds:KeyInfo>
</md:KeyDescriptor>
<md:SingleLogoutService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-
Redirect" Location="http://localhost:7337/SSO/logout"/>
<md:SingleLogoutService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-
POST" Location="http://localhost:7337/SSO/logout"/>
<md:AssertionConsumerService
Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST"
Location="http://localhost:7337/SSO/assertion" index="1"/>
<md:AssertionConsumerService
Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Artifact"
Location="http://localhost:7337/SSO/assertion" index="2"/>
</md:SPSSODescriptor>
<md:Organization>
<md:OrganizationName xml:lang="en">NNN</md:OrganizationName>
<md:OrganizationDisplayName xml:lang="en">NNN</md:OrganizationDisplayName>
<md:OrganizationURL xml:lang="en">www.xyz.com</md:OrganizationURL>
</md:Organization>
<md:ContactPerson contactType="administrative">
<md:GivenName>Test</md:GivenName>
<md:SurName>K</md:SurName>
<md:EmailAddress>test.k#gmail.com</md:EmailAddress>
</md:ContactPerson>
</md:EntityDescriptor>
When I am running application it is redirecting me to wso2 login page. After giving username and password and on click on Login button I'm getting this error.

Answer 1

Finally I got it after lot of struggle and working properly.
I was missing a check box to check under SAML2 Web SSO Configuration, see the image below