# Package org.keycloak.saml.common.exceptions.fed

- Exception Summary
  Exception | Description
  --- | ---
  AssertionExpiredException | Security Exception indicating expiration of SAML2 assertion
  IssueInstantMissingException | Exception indicating that the IssueInstant is missing
  IssuerNotTrustedException | Exception indicating that the issuer is not trusted
  SignatureValidationException | Indicates the failure of signature validation
  WSTrustException | Exception used to convey that an error has happened when handling a WS-Trust request message.

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