{
    "success": 1,
    "message": "POS sync completed",
    "total_submitted": 0,
    "total_failed": 0,
    "branch_results": [
        {
            "branchcode": "187",
            "return_status": "Skipped",
            "error_details": "No unsent bills",
            "bills_sent": 0
        }
    ]
}