SAP Knowledge Base Article - Public

3569644 - Connectivity Errors And How To Troubleshooting In SAP Business ByDesign

Symptom

Connectivity errors can occur on either the client or server side. When occurring on the client side, these errors typically indicate that establishing the technical HTTP(S) connection to the server at the network level was not possible.
Errors on the server side are generally reported through an HTTP error code.  

The error codes can be found in the Business Communication Monitoring view within the Administrator and/or Application and User Management work center.

Environment

SAP Business ByDesign

Resolution

Outbound Errors

The following table summarizes error codes for outbound errors, along with the reasons these errors arise, and the recommended actions to solve them.

Error Code

Reasons and Recommended Actions

ICM_HTTP_UNAUTHORIZED

Logon failed.

Reason: Either a wrong user and password or an incorrect key pair was used.

Action: Depending on the authentication method, check the user and password or the key pair in the Communication Arrangements view.

ICM_HTTP_CONNECTION_REFUSED

Connection to the server rejected.

Reason: Either a wrong port number was used or the host name used exists but does not accept connections.

Action: Correct the port number or host name in the Communication Arrangements view.

ICM_HTTP_HOST_UNKNOWN

Unknown host name.

Reason: The host name configured on the client side does not exist.

Action: Correct the host name in the Communication Arrangements view.

ICM_HTTP_SSL_ERROR

SSL error.

This error may occur for several reasons. Depending on the reason, proceed as follows:

  • Reason: The configured port exists but is not an SSL port.

    Action: Correct the port number in the Communication Arrangements view.

  • Reason: The SSL server certificate is signed by a Certification Authority (CA) that is unknown or not included in the trust list.

    Action: Carefully, check the server certificate. If it is correctly signed and signed by the correct CA, add the certificate from the CA to the trust list using the Edit Certificate Trust List common task in the Application and User Management work center.

  • Reason: The server certificate is not part of the certificate chain or is sent in the wrong sequence, or the chain contains superfluous certificates.

    Action: Check that the certificate chain that the server sends complies with RFC5246.

ICM_HTTP_SSL_CERT_MISMATCH

Invalid host name in SSL server certificate.

Reason: The server name or the server name pattern contained in the server's certificate does not match the host name of the server.

Action: Contact the person responsible for the server and ask for the server certificate setup to be checked and corrected if necessary.

Note

If the server is set up correctly, then this error may indicate a man-in-the-middle attack.

ICM_HTTP_PROXY_CONN_REFUSED

Connection rejected by the proxy server.

Reason: An error is present in the networking infrastructure.

Action: Create a case.

ICM_HTTP_PROXY_HOST_UNKNOWN

Unknown proxy host name.

Reason: An error is present in the networking infrastructure.

Action: Create a case.

See Also

Keywords

Communication Arrangements, Business Communication Monitoring, ICM_HTTP_UNAUTHORIZED, ICM_HTTP_CONNECTION_REFUSED, ICM_HTTP_HOST_UNKNOWN, ICM_HTTP_SSL_ERROR, ICM_HTTP_SSL_CERT_MISMATCH, ICM_HTTP_PROXY_CONN_REFUSED, ICM_HTTP_PROXY_HOST_UNKNOWN , KBA , AP-RC-CEC-B2B , ByD On-Demand Cloud-Process Integration B2B , Bug Filed

Product

SAP Business ByDesign all versions