SAP S/4 HANA Prerequisites

SAP S/4 HANA Prerequisites

1. Enable the RFC-over-SOAP ICF Service

  1. Run transaction SICF.
  2. Navigate to: default_host → sap → bc → soap → rfc
  3. Check the service status:
    • Green checkmark = active, no action needed.
    • Gray icon = inactive — right-click → Activate Service.

2. Set the icf/user_recheck Profile Parameter

 By default icf/user_recheck = 1 re-validates the user on every request, which defeats session reuse and can cause intermittent auth failures mid-cycle.

  1. Run RZ11, check icf/user_recheck.
  2. If not 0, update via RZ10 on the instance profile: icf/user_recheck = 0.
  3. Activate the profile and restart the ICM (SMICM → Administration → ICM → Exit ​​​​Hard, or an instance restart).

3. Authorization

Assign authorization objects as covered in:
👉 How to Assign Authorization Objects

4. Determine and Verify the HTTP(S) Port
  1. Run transaction SMICM, then Goto → Services to list the ICM's active HTTP/HTTPS services and their ports.