How UKG Sync for SAP connects to SAP S/4HANA
Third-party API connector
The connector uses APIs on the UKG side and on the SAP side to move data on a schedule or on events. Because it is a third-party tool, treat it as community-grade integration rather than a vendor-certified one, and ask CloudApper for the supported SAP interfaces and versions.
No-code mapping layer
Field mappings, transformations and schedules are configured in the connector. This speeds delivery, but the mapping logic still has to reflect your pay rules, cost centers and employee identifiers.
What data moves
| From | To | Data | When |
|---|---|---|---|
| UKG (Kronos) | SuccessFactors or S/4HANA | Punches, hours worked, pay codes, absences and overtime | Scheduled sync or period close |
| SuccessFactors or S/4HANA | UKG | Employee master, organisation, cost center and job data | Hire, transfer or change |
| UKG | S/4HANA costing | Labor hours by cost center for allocation | Approved timecards |
| Connector | Operations team | Sync errors and unmatched records | Failed or partial sync |
Setting it up
- 1Agree on identifiersChoose one employee ID that exists in UKG, SuccessFactors and S/4HANA, and clean up mismatches first.
- 2Map pay codesMap UKG pay codes, shifts and overtime categories to SAP wage types or time types.
- 3Map cost objectsAlign UKG labor levels with SAP cost centers, orders or WBS elements.
- 4Provision API accessCreate service accounts with minimal rights in UKG and SAP and store credentials securely.
- 5Configure and test syncSet direction, frequency and filters, and test with a small group across a full pay period.
- 6Build reconciliation reportsCompare hours in UKG with hours posted in SAP and investigate differences before payroll runs.
- 7Plan for upgradesTrack UKG and SAP release changes that could affect APIs the connector depends on.
What usually breaks
- !Employee ID mismatches that drop or duplicate records.
- !Pay code mapping gaps, which push hours into the wrong wage type.
- !Rounding rules that differ between UKG and SAP, leaving small but persistent differences.
- !Retro changes in UKG after a period closed in SAP.
- !Connector failures that go unnoticed until payroll, because nobody watches the sync log.
- !API limits or credential expiry that stop the sync silently.
A private AI layer across both systems
Sync reconciliation
Compare UKG timecards with S/4HANA postings and list differences by employee and pay code, with the most likely cause such as rounding, a retro edit or a missing mapping.
Error log explainer
Read the connector's error log and relevant records to explain each failure in plain language and draft a fix for the integration owner to approve.
Labor cost questions
Let finance ask where labor cost differs from plan by cost center and see the underlying time records.
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When something else fits better
- SAP SuccessFactors Time Tracking if you want a single first-party time system and can retire UKG.
- UKG's own integration options or an integration platform such as SAP Integration Suite for more governance than a no-code tool.
- A scheduled flat file export and import for a small site where volumes are low.
Frequently asked questions
Is UKG Sync for SAP certified by SAP or UKG?
The record describes it as a third-party API connector from CloudApper. It does not state SAP or UKG certification, so ask the vendor for supported versions and references before relying on it for payroll-critical data.
What data does it sync?
Time and labor data such as hours, pay codes and absences, plus employee and organisation data for matching. The exact objects and fields depend on configuration, so confirm them against your payroll and costing needs.
Why do hours differ between UKG and SAP?
Common causes are rounding rules, retro edits after period close, unmapped pay codes and employee ID mismatches. A reconciliation report by employee and day will usually point to the cause quickly.
Where does a private AI layer help?
On reconciliation and error explanation across UKG and SAP, run on your own infrastructure because the data is personal. It reads and explains, and a payroll owner approves any correction.
Pairing documented at ukg.cloudapper.ai/ukg-integration/how-to-integrate-sap-successfactors-with-ukg-f . UKG Sync for SAP is a product of CloudApper; Netray is independent and not affiliated with either vendor.