3511145 - CTE - Connection error when setting up Concur Integration (CTE_SETUP)

The error changes depending on the RFC set up.

Connections using proxy:

In the System Setup wizard, adjust the client credentials.
No data can be received from HTTP client http_communication_failure.
ICM_HTTP_CONNECTION_FAILED

Direct connections:

In the System Setup wizard, adjust the client credentials.
No data can be received from HTTP client http_communication_failure.
No response from Concur system Q51_RFC_Concur, Try again later.
500 Native SSL error
ICM_HTTP_SSL_ERROR

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• SAP ERP
• SAP S/4HANA
• SAP ERP integration with SAP Concur solutions
• SAP S/4HANA integration with SAP Concur solutions
• Concur Expense
• Concur Travel

Concur Expense all versions ; Concur Travel all versions ; SAP ERP all versions ; SAP ERP integration with SAP Concur solutions all versions ; SAP S/4HANA all versions ; SAP S/4HANA integration with SAP Concur solutions all versions

CTE_SETUP, SM59, STRUST, Concur, integration, connectivity, communication, HTTP, RFC, certificate, SSL, TLS, cipher, ciphersuite , KBA , BNS-CON-SE-ERP , Concur ERP Integration , BNS-CON-SE-S4 , Concur Suite Enablement S/4HANA Integration , Known Error