Error calling API_BUSINESS_PARTNER via Communication Arrangement in S/4HANA Public Cloud

Hi Experts, I am trying to consume the standard API_BUSINESS_PARTNER service from ABAP Cloud in SAP S/4HANA Public Cloud. I have already completed the following: Created the Communication System Created the Communication Arrangement using SAP_COM_0008 Activated the service Generated a Service Consumption Model from the service metadata Implemented the API call in ABAP Cloud I am using: lo_destination = cl_http_destination_provider=>create_by_comm_arrangement( comm_scenario = ‘SAP_COM_0008’ comm_system_id = ‘ CS_EINVOICE_SAP_COM_0008’ service_id = ‘ API_BUSINESS_PARTNER_0001_IWSG ‘ ). However,