3515984 - System for Cross-domain Identity Management (SCIM) returns error "Read-only access because HCM integration is active"

Using the POST method for API "System for Cross-domain Identity Management (SCIM)" to create business user in SAP S/4HANA Cloud system.
Communication Scenario "System for Cross-domain Identity Management Integration" (SAP_COM_0465) is used.
Error "Read-only access because HCM integration is active" returns and not able to create business users to the system.

SAP S/4HANA Cloud Public Edition

In SAP S/4HANA Cloud Public Edition, the HCM integration is active. The worker needs to be already available in S/4HANA Cloud system before creating the associated business user for this worker.

For more details concerning a proper identity management strategy for SAP S/4HANA Cloud, refer to Identity Management for SAP S/4HANA Cloud and Integrated Products | SAP Help Portal.

The API  Overview | Replicate Basic Master Data for Workforce from External HR Systems | SAP Business Accelerator Hub can be used to create workforce-related data in S/4HANA Cloud system. 

Business Accelerator Hub
System for Cross-domain Identity Management Integration (SCIM)

SAP Help Portal
SCIM Interface for IAM

Identity Management for SAP S/4HANA Cloud and Integrated Products | SAP Help Portal

Overview | Replicate Basic Master Data for Workforce from External HR Systems | SAP Business Accelerator Hub

HCM integration is active, SCIM, SAP_COM_0465, Cross-domain Identity Management, Read-only, API, SAP_COM_0301, Replicate Basic Master Data for Workforce from External HR Systems  , KBA , CA-GTF-BUM , Business User Management , Problem

SAP S/4HANA Cloud Public Edition all versions ; SAP S/4HANA Cloud all versions