3810569 - SICF / ICF Service Security Hardening in SAP S/4HANA – Impact Assessment, Usage Verification, and Deactivation Guidance

A security hardening exercise, for example, a RISE security recommendation, SAP Security Optimization Service (SOS) finding, or ECS-initiated review has identified one or more active SICF services that are proposed for deactivation.

One or more of the following questions are raised:

1. What is the purpose of the identified ICF service, and is it required in a production SAP S/4HANA system?
2. Is the service currently in use, and how can usage or dependencies be verified?
3. Which SAP programs, function modules, or third-party applications depend on this service?
4. Is it safe to deactivate the service, and what is the expected impact?
5. Is the service obsolete in SAP S/4HANA, and is there official documentation or an SAP Note confirming this?
6. How can the deactivation be reversed if needed?

• Product: SAP S/4HANA (all versions), SAP S/4HANA Cloud Private Edition, SAP NetWeaver AS ABAP
• Component: BC-MID-ICF (Internet Communication Framework)
• Transaction: SICF
• Deployment: On-Premise, RISE with SAP (Private Cloud Edition)

SICF deactivate, ICF security hardening, RISE hardening, webrfc deactivate, FormToRfc security, echo ICF service, xrfc_test, certmap certreq BSP ITS, soap/rfc SOAP runtime, srt/IDoc idoc_xml ALE, attack surface ICF, ECS security recommendation, SOS finding ICF, unused ICF services S/4HANA, BC-MID-ICF deactivation, SICF service impact , KBA , BC-MID-ICF , Internet Communication Framework , Problem