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1960387 - SUP - X509 SSO SSL: Transport error: 401 Error: Unauthorized


When an SUP client application uses X509 certificates to pass SSO credentials to an SAP web-service during a synchronization cache refresh, the SUP call to the web-service could fail with the following error:

Transport error: 401 Error: Unauthorized

The SUP server log should show the following entries.

  • Using certificate alias supserver
  • Using nonpreemptive basic authentication
  • basic authentication scheme selected




Sybase Unwired Platform (SUP) 2.2.x

SAP Mobile Platform (SMP) 2.3.x

SAP Web Services

X509 Single-Sign-On (SSO) certificates


SAP Mobile Platform 2.3 ; Sybase Unwired Platform 2.2


KBA , MOB-SUP-RT-ML , SUP Runtime Mobilink , Problem

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