This post is in continuation to Original Employee Conversion Post When SuccessFactors Stays But Oracle Fusion Arrives .The employee conversion process follows a disciplined five-stage flow designed to ensure data integrity and transparency throughout the migration from SuccessFactors to Oracle Fusion HCM.
1. File Intake & Specification
The customer delivers a compiled flat file to an agreed location, which the integration team then loads into ATP staging using an APEX upload. At this initial stage, the source data is preserved exactly as received without any transformations to maintain a clean record of the original input.
2. Validate in ATP
A two-tier validation process is executed entirely within the ATP environment before any data reaches Fusion HCM.
- Tier 1 (Structural): Catches issues such as null mandatory fields, invalid date formats (which must be YYYY/MM/DD), and duplicate employee IDs.
- Tier 2 (Setup-Dependent): Verifies that values in staging, such as Job Codes, Departments, and Legal Employers, actually exist in the target Fusion HCM environment. The exit criterion for this stage is having zero unresolved Tier 1 errors and ensuring all Tier 2 gaps are remediated in the Fusion setup.
3. Generate HDL Files
Records that reach the "VALIDATED" status are written into the HDL (HCM Data Loader) DAT format. The system generates one HDL file per object type along with a manifest that includes record counts and control totals to ensure they match the validated counts in staging.
4. Load into Fusion HCM
The generated HDL files are submitted to Fusion HCM via the "Load HCM Data" scheduled process. Loading must occur in a strict dependency order: Worker, then Work Relationship, followed by Assignment, and finally Salary. Once the load is complete, error reports are parsed immediately to update the staging tables with either a "LOADED" or "FUSION_ERR" status.
5. Reconcile & Sign Off
The final stage involves a three-way count reconciliation to ensure data consistency across the source file, the ATP staging "LOADED" count, and the Fusion HCM REST API count. Following a spot-check validation of 20–30 records in the Fusion UI to verify details like hire dates and manager relationships, formal sign-off is obtained for go-live.
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