3508022 - Error: "Could not invoke function \"RFC_FUNCTION_SEARCH\" : rfcSDKError"

Symptom

The connection type is 'SAP S/4HANA On-Premise'. When validating connection, the error occurs:

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Connection "CONN DSP to S4 QAS GCP" is valid, but not all features are available.
- Data flows can’t be used because of errors in the connection.
- Replication flows can’t be used because of errors in the connection.
- Remote tables are enabled.
- Model Import is disabled.

Data Flows: Cause: ABAP connector(Axino) ABAP connection check FAILED: request failed: rc=1, msg="An Error occurred: Could not invoke function \"RFC_FUNCTION_SEARCH\" : rfcSDKError[Number:000, NO_FUNCTION_FOUND, , , 000, , , , ]. An Error occurred: Could not invoke function \"RFC_FUNCTION_SEARCH\" : rfcSDKError[Number:000, NO_FUNCTION_FOUND, , , 000, , , , ]. "
Please refer to SAP Note 2849542 for more information.

Replication Flows: Cause: ABAP connector(Axino) ABAP connection check FAILED: request failed: rc=1, msg="An Error occurred: Could not invoke function \"RFC_FUNCTION_SEARCH\" : rfcSDKError[Number:000, NO_FUNCTION_FOUND, , , 000, , , , ]. An Error occurred: Could not invoke function \"RFC_FUNCTION_SEARCH\" : rfcSDKError[Number:000, NO_FUNCTION_FOUND, , , 000, , , , ]. "
Please refer to SAP Note 2849542 for more information.
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In addition, the following error message can be observed in the SAP Cloud Connector log:

2024-xx-xx xx:xx:xx,282 +0200#ERROR#com.sap.scc.protocol.rfc#RfcPool_1_Thread_5031#0x4ab69dbe#Unable to send response to cloud due to missing channel
com.sap.core.connectivity.spi.NoChannelsAvailableException: No tunnel channels available
at com.sap.core.connectivity.tunnel.core.impl.context.AbstractTunnelBridge.write(AbstractTunnelBridge.java:47)
at com.sap.scc.protocol.rfc.RfcProtocolProcessor.sendResponse(RfcProtocolProcessor.java:241)
at com.sap.scc.protocol.rfc.RfcProtocolProcessor.returnError(RfcProtocolProcessor.java:232)
at com.sap.scc.protocol.rfc.RfcProtocolProcessor.processBlock(RfcProtocolProcessor.java:209)
at com.sap.scc.protocol.rfc.RfcProtocolProcessorRunnable.run(RfcProtocolProcessorRunnable.java:131)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:838)

Environment

SAP Datasphere

Product

SAP Datasphere all versions ; SAP S/4HANA all versions

Keywords

DWC, DS, SCC , KBA , DS-DI-CON , Connections , BC-MID-SCC , SAP Cloud Connector On-Demand/On-Premise Connectivity , Problem

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