3702480 - 401 Unauthorized Error When Connecting Proaxia Connector to SAP FSM

An ERP system (for example, SAP ECC or SAP S/4HANA) is being integrated with SAP Field Service Management using the Proaxia Connector (PACG). The integration is configured to authenticate against FSM using a Client ID and Client Secret, following the steps described in the Proaxia documentation, for example:

• Message Broker 4.X application config file

Despite using a confirmed and valid FSM Client ID and Client Secret, the following error appears in the Message Broker / Transporter logs:

ERROR Exception while starting cloud transporter, transporter will not operate
TransporterException: Login failed. Wrong cloud account name or password.
...
caused by WebException: The remote server returned an error: (401) Unauthorized.

As a result, the Message Broker engine stops and the connection to FSM Cloud cannot be established.

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.

• SAP Field Service Management (FSM)
• Proaxia Connector (PACG)
• SAP ECC, S/4 HANA 

SAP Field Service Management, FSM, Proaxia Connector, PACG, ERP Integration, SAP ECC, SAP S/4HANA, Message Broker, Cloud Transporter, 401 Unauthorized, OAuth2, Client ID, Client Secret, Clients OAuth2 API, FSM Admin, ERP Connector, Authentication Error, Authorization Failure, API Access Restriction, IP Whitelisting, PROAXIA_CON_ERP_SAP_ECC , KBA , CEC-SRV-FSM-ERP , FSM Connector for SAP ERP , Known Error