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2839828 - SAML 2.0 error: "CX_SAML20_ASSERTION: The assertion has already been consumed"

Symptom

The following symptoms are present:

  • Attempted SAML 2.0-based logons fail. The following error appears in the SAML 2.0 trace:
    "SAML20 Caused by: CX_SAML20_ASSERTION: The assertion has already been consumed. Long text: The assertion has already been consumed."

  • Duplicate SAML HTTP POST parameters are submitted according to SAML2 trace, with the first one being successfully processed and the following ones' processing resulting in the error.

SAML 2.0 traces can be captured using the Security Diagnostics Tool.


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Environment

  • SAP enhancement package 2 for SAP NetWeaver 7.0
  • SAP NetWeaver 7.3
  • SAP enhancement package 1 for SAP NetWeaver 7.3
  • SAP NetWeaver 7.4
  • SAP NetWeaver 7.5 and higher

Product

SAP NetWeaver 7.3 ; SAP NetWeaver 7.4 ; SAP NetWeaver 7.5 ; SAP enhancement package 1 for SAP NetWeaver 7.3 ; SAP enhancement package 2 for SAP NetWeaver 7.0

Keywords

SAML2, SAML, SAML 2.0, SAML Logon, The assertion has already been consumed, assetion has already been consumed, assertion consumed, CX_SAML20_ASSERTION, sso, SAML error, error code, NotOnOrAfter , KBA , BC-SEC-LGN-SML , SAML 2.0 for ABAP , Problem

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