The maintenance timeline for SAP HCM
Mainstream maintenance for SAP ERP HCM ends on 31 December 2027, aligned with the broader ECC deadline. Extended maintenance is available through 31 December 2030 at additional cost — a buffer with a cost, not a long-term strategy.
The compatibility pack — the mechanism that allowed S/4HANA and ECC HCM code to run in the same instance — expired at the end of 2025. Organisations that were running S/4HANA with the compatibility pack to preserve ECC HCM functionality needed to have moved to a supported HR path. This underscores the point that HR timeline management in the S/4HANA context requires precision.
Path 1: SAP SuccessFactors as the target HR platform
For organisations pursuing a full cloud HR transformation, SAP SuccessFactors Employee Central is the primary system of record — managing core HR data, global employee master, organisational hierarchy, and position management. Talent modules — Recruiting, Onboarding, Performance and Goals, Learning, Succession and Development — add the full HCM capability layer.
The integration between SuccessFactors and S/4HANA is handled through the Business Integration Builder — a prepackaged integration framework that replicates the HR mini-master from Employee Central to S/4HANA, enabling financial and logistics processes that depend on employee data to continue functioning.
In the GCC specifically, SuccessFactors delivers localised payroll and HR compliance for Saudi Arabia and UAE — including GOSI calculations, WPS (Wage Protection System) file generation for UAE, Mudad integration for Saudi payroll, Iqama and visa tracking for expatriate workforces, and end-of-service benefit accrual.
Path 2: SAP HCM for S/4HANA (H4S4)
For organisations that require on-premise HR — due to data residency regulations, payroll complexity, or organisational readiness constraints — SAP HCM for S/4HANA (H4S4) provides an on-premise HR solution running natively on S/4HANA. H4S4 is SAP’s strategic on-premise HR product, supported on S/4HANA through 2040.
H4S4 delivers the full SAP HCM on-premise capability — including deep time management (schema-based time evaluation, complex work schedule rules, time wage types), the payroll kernel with all country-specific gross-to-net logic, and organisational management — running on the S/4HANA platform with SAP Fiori applications replacing SAPGUI transactions progressively.
The migration from ECC HCM to H4S4 is typically performed as part of a brownfield system conversion. For organisations with highly customised payroll schemas or complex time evaluation logic, this is not a trivial migration — but it is structurally cleaner than a reimplementation.
Path 3 and Path 4: PCE and the two-tier model
RISE with SAP Private Cloud Edition delivers S/4HANA as a managed cloud service with H4S4 HR functionality. For organisations in Saudi Arabia subject to PDPL data residency requirements, RISE with SAP is available on AWS Riyadh (me-south-1) — meaning employee data, payroll data, and HR analytics remain in-Kingdom.
The two-tier model — SuccessFactors Employee Central as system of record for global HR master data and talent processes, with the existing on-premise SAP HCM payroll engine retained as H4S4 on S/4HANA — is a common pragmatic path for large organisations with complex payroll. It allows organisations to modernise talent management without the risk of migrating complex payroll logic to the cloud before the organisation is ready.
GCC workforce compliance: requirements that cannot be assumed
Visa and Iqama management. Saudi Arabia and UAE require employer-managed tracking of residence permits, work visas, and passport validity for all non-national employees. An expired Iqama exposes both employee and employer to regulatory risk.
GOSI, GPSSA, and end-of-service. Each GCC country has its own social insurance scheme and end-of-service gratuity calculation rules. Saudi GOSI, UAE GPSSA, and the Bahrain SIO each have different contribution rates, eligibility rules, and payroll integration requirements.
WPS compliance. UAE’s Wage Protection System requires that payroll be processed within a specific window and that salary transfer files be submitted to the UAE Ministry of Human Resources. WPS non-compliance carries licence revocation risk.
Saudisation and Emiratisation tracking. Saudi Arabia’s Nitaqat programme and UAE’s Emiratisation quota requirements mandate specific national-to-expatriate workforce ratios. Non-compliance affects business licensing. HR systems operating in the GCC must support workforce demographic reporting at the granularity required for Nitaqat and Emiratisation calculations.
The decision framework
Where is your payroll complexity? If your payroll runs complex time schemas, union agreements, multi-jurisdiction calculations, or heavily customised gross-to-net logic, the risk of moving to cloud payroll before that logic is validated in SuccessFactors ECP is significant. H4S4 or the two-tier model preserves payroll stability while enabling cloud HR modernisation.
What are your data residency requirements? If employee data must remain in-Kingdom (Saudi Arabia PDPL) or in-country (UAE data protection framework), your architecture must reflect that. RISE on AWS Riyadh and Azure UAE North are the relevant paths.
What is your talent management priority? If improving recruiter and employee experience, enabling continuous performance management, and building a global people analytics capability are strategic priorities, SuccessFactors delivers these in a way that on-premise HCM does not.
What is your 2027 programme capacity? A full SuccessFactors transformation — Employee Central, talent modules, ECP — is a 12–24 month programme in its own right. Many organisations sequence the ERP migration first and HR transformation second, using H4S4 as the bridge.
IOTEK’s HR transformation practice operates across all four paths. We do not advocate for one approach over another — the right answer is determined by your organisation’s payroll complexity, data residency obligations, talent management ambitions, and programme capacity.
To discuss how this applies to your programme, contact IOTEK.
Sources & References
- SAP Help — SuccessFactors EC Integration Deployment Options — help.sap.com/docs/successfactors-ec-s4-hcm-integration
- SAP Community — Application Decisions for HR Strategy (H4S4) — community.sap.com/…/application-decisions-for-hr-strategy-and-planning
- EPI-USE Labs — SAP HCM for S/4HANA (H4S4) Overview — epiuselabs.com/lets-talk-hcm/bridge-options-sap-successfactors-what-is-h4s4
SAP, S/4HANA, RISE with SAP, GROW with SAP, Joule, and SAP Business Technology Platform are trademarks of SAP SE. IOTEK CONSULTING LLC is an independent consultancy and is not affiliated with, endorsed by, or a certified partner of SAP SE unless stated in a current written partner agreement. Content is based on publicly available SAP documentation, SAP Community resources, and IOTEK’s independent practitioner experience.