diff --git a/Controllers/LinesController.cs b/Controllers/LinesController.cs
index ed8ce63..d9269d1 100644
--- a/Controllers/LinesController.cs
+++ b/Controllers/LinesController.cs
@@ -3,6 +3,7 @@ using line_gestao_api.Data;
 using line_gestao_api.Dtos;
 using line_gestao_api.Models;
 using line_gestao_api.Services;
+using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
@@ -503,6 +504,7 @@ namespace line_gestao_api.Controllers
         // ✅ 8. IMPORT EXCEL
         // ==========================================================
         [HttpPost("import-excel")]
+        [Authorize]
         [Consumes("multipart/form-data")]
         [RequestSizeLimit(50_000_000)]
         public async Task<ActionResult<ImportResultDto>> ImportExcel([FromForm] ImportExcelForm form)
diff --git a/Dtos/ParcelamentosDtos.cs b/Dtos/ParcelamentosDtos.cs
index 53d73b6..a1238fa 100644
--- a/Dtos/ParcelamentosDtos.cs
+++ b/Dtos/ParcelamentosDtos.cs
@@ -1,6 +1,6 @@
 namespace line_gestao_api.Dtos;
 
-public sealed class ParcelamentoListDto
+public class ParcelamentoListDto
 {
     public Guid Id { get; set; }
     public int? AnoRef { get; set; }
diff --git a/Services/ParcelamentosImportService.cs b/Services/ParcelamentosImportService.cs
index c1a5671..e1e7b13 100644
--- a/Services/ParcelamentosImportService.cs
+++ b/Services/ParcelamentosImportService.cs
@@ -57,18 +57,20 @@ public sealed class ParcelamentosImportService
             };
         }
 
-        var yearRowIndex = headerRowIndex - 1;
+        var yearRowIndex = FindYearRowIndex(ws, headerRowIndex);
         var headerRow = ws.Row(headerRowIndex);
         var map = BuildHeaderMap(headerRow);
 
         var colLinha = GetCol(map, "LINHA");
+        var colAnoRef = GetColAny(map, "ANO REF", "ANOREF", "ANO REF.", "ANO REFERENCIA", "ANO REFERÊNCIA");
+        var colItem = GetCol(map, "ITEM");
         var colCliente = GetCol(map, "CLIENTE");
         var colQtParcelas = GetColAny(map, "QT PARCELAS", "QT. PARCELAS", "QT PARCELAS (NN/TT)", "QTDE PARCELAS");
         var colValorCheio = GetColAny(map, "VALOR CHEIO");
         var colDesconto = GetColAny(map, "DESCONTO");
         var colValorComDesconto = GetColAny(map, "VALOR C/ DESCONTO", "VALOR COM DESCONTO");
 
-        if (colLinha == 0 || colValorComDesconto == 0)
+        if (colLinha == 0 || colValorComDesconto == 0 || colAnoRef == 0 || colItem == 0)
         {
             return new ParcelamentosImportSummaryDto
             {
@@ -77,7 +79,7 @@ public sealed class ParcelamentosImportService
                     new ParcelamentosImportErrorDto
                     {
                         LinhaExcel = headerRowIndex,
-                        Motivo = "Colunas obrigatórias não encontradas (LINHA / VALOR C/ DESCONTO)."
+                        Motivo = "Colunas obrigatórias não encontradas (LINHA / ANO REF / ITEM / VALOR C/ DESCONTO)."
                     }
                 }
             };
@@ -99,15 +101,15 @@ public sealed class ParcelamentosImportService
         for (int row = headerRowIndex + 1; row <= lastRow; row++)
         {
             var linhaValue = GetCellString(ws, row, colLinha);
-            var itemStr = GetCellString(ws, row, 4);
+            var itemStr = GetCellString(ws, row, colItem);
             if (string.IsNullOrWhiteSpace(itemStr) && string.IsNullOrWhiteSpace(linhaValue))
             {
-                break;
+                continue;
             }
 
             summary.Lidos++;
 
-            var anoRef = TryNullableInt(GetCellString(ws, row, 3));
+            var anoRef = TryNullableInt(GetCellString(ws, row, colAnoRef));
             var item = TryNullableInt(itemStr);
 
             if (!item.HasValue)
@@ -127,7 +129,7 @@ public sealed class ParcelamentosImportService
                 {
                     LinhaExcel = row,
                     Motivo = "AnoRef inválido ou vazio.",
-                    Valor = GetCellString(ws, row, 3)
+                    Valor = GetCellString(ws, row, colAnoRef)
                 });
                 continue;
             }
@@ -201,7 +203,12 @@ public sealed class ParcelamentosImportService
     private static IXLWorksheet? FindWorksheet(XLWorkbook wb)
     {
         return wb.Worksheets.FirstOrDefault(w => NormalizeHeader(w.Name) == NormalizeHeader("PARCELAMENTOS DE APARELHOS"))
-               ?? wb.Worksheets.FirstOrDefault(w => NormalizeHeader(w.Name) == NormalizeHeader("PARCELAMENTOS"));
+               ?? wb.Worksheets.FirstOrDefault(w => NormalizeHeader(w.Name) == NormalizeHeader("PARCELAMENTOS"))
+               ?? wb.Worksheets.FirstOrDefault(w =>
+               {
+                   var normalized = NormalizeHeader(w.Name);
+                   return normalized.Contains("PARCELAMENTO") || normalized.Contains("PARCELAMENTOS") || normalized.Contains("PARECALEMENTO");
+               });
     }
 
     private static int FindHeaderRow(IXLWorksheet ws)
@@ -260,6 +267,23 @@ public sealed class ParcelamentosImportService
         return yearMap;
     }
 
+    private static int FindYearRowIndex(IXLWorksheet ws, int headerRowIndex)
+    {
+        for (int row = headerRowIndex - 1; row >= Math.Max(1, headerRowIndex - 3); row--)
+        {
+            var rowCells = ws.Row(row).CellsUsed();
+            foreach (var cell in rowCells)
+            {
+                if (int.TryParse(OnlyDigits(cell.GetString()), out var year) && year >= 2000 && year <= 2100)
+                {
+                    return row;
+                }
+            }
+        }
+
+        return 0;
+    }
+
     private static List<int> BuildMonthColumns(IXLRow headerRow, int startCol)
     {
         var lastCol = headerRow.LastCellUsed()?.Address.ColumnNumber ?? startCol;