SAML 2.0 - Multiple AssertionConsumerService in SP

Question

I implement a SAML 2.0 SP.
I have a login servlet with endpoint https://my.domain.com/mng/samlLogin, so in the SP metadata file I define:

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Answer 1

Have a look at Assertion Consumer Service Glossary which will tell you that

Assertion Consumer Service

A SAML-compliant portion of PingFederate in an SP role that receives and processes assertions from an IdP.

attributes

Distinct characteristics that describe a subject. If the subject is a Web site user, attributes may include a name, group affiliation, email address, etc.

attribute contract

A list of attributes, agreed to by the partners in an identity federation, representing information about a user (SAML subject). The attributes are sent from the IdP to the SP during SSO or STS processing.

So you associate bindings to the Assertion Consumer Service (ACS) endpoint(s) where your SP will receive assertions.