3542665 - Runtime Error "CX_REST_CLIENT_EXCEPTION" when using SAP BTP Mobile Services App Creator for SAP Service and Asset Manager App creation

Symptom

Following Runtime Error occurs when using App Creator to create SAP Service and Asset Manager application in SAP BTP Mobile Services. The error occurs specifically when opting for a direct connection to SAP BTP services from the back-end system.

Category ABAP programming error
Runtime Errors UNCAUGHT_EXCEPTION
Except. CX_REST_CLIENT_EXCEPTION
ABAP: Program CL_REST_HTTP_CLIENT===========CP
Application Component BC-MID-RST
----
|Error analysis |
| An exception has occurred in class "CX_REST_CLIENT_EXCEPTION". As this |
| exception was not |
| caught, a runtime error occurred. The reason for the exception |
| occurring was: |
| HTTP client - communication error |
| |
----------------------------------------------------------------------------------------------------

In the SMICM trace log (ICM trace), you may encounter the following error:

"Direct connect to hostname:port failed: NIECONN_REFUSED(-10)"

Environment

SAP Service and Asset Manager (SSAM)
App Creator (transaction /MERP/CPMS_APPCREATE)
- Report /MERP/CORE_CPMS_APPCREATE_PROG

Keywords

SAP Service and Asset Manager, Direct Connection, SAP BTP Services, Back-End System, Runtime Error, CX_REST_CLIENT_EXCEPTION, Network Communication, RFC Configuration, SAP Note 3320366, /MERP/CORE_CPMS_APPCREATE_PROG, /MERP/CPMS_APPCREATE, NIECONN_REFUSED(-10), HTTP client - communication error , KBA , MOB-APP-SAM , SAP Service and Asset Manager , MOB-APP-MAO , Mobile Application Integration Framework , Problem

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