diff --git a/src/hooks/module/useModuleBasicSetting.js b/src/hooks/module/useModuleBasicSetting.js
index 3d0b35df..abfb19ca 100644
--- a/src/hooks/module/useModuleBasicSetting.js
+++ b/src/hooks/module/useModuleBasicSetting.js
@@ -1250,20 +1250,19 @@ export function useModuleBasicSetting(tabNum) {
           if (!inside) return
 
           //입력받은 값의 합
-
-          let sumColCount = layoutSetupRef.reduce((acc, cur) => acc + cur.col, 0)
-
-          const isMultipleModules = checkedModule.length > 1
+          const isMultipleModules = checkedModule.length > 1 //모듈이 여러개면
+          const maxCol = trestlePolygon.trestleDetail.moduleMaxCols //최대 열수 -> 얘는 멀티랑 관계없음
           const maxRow = isMultipleModules
             ? trestlePolygon.trestleDetail.moduleMaxRows
-            : trestlePolygon.trestleDetail.module.find((item) => item.moduleTpCd === checkedModule[0].moduleTpCd).moduleMaxRows
+            : trestlePolygon.trestleDetail.module.find((item) => item.moduleTpCd === checkedModule[0].moduleTpCd).moduleMaxRows //멀티모듈이면 밖에 maxRows로 판단 아니면 module->itemmList를 가지고 판단
 
+          const sumColCount = layoutSetupRef.reduce((acc, cur) => acc + cur.col, 0) //입력한 행의 합
           const sumRowCount = isMultipleModules
             ? layoutSetupRef.reduce((acc, cur) => acc + cur.row, 0)
-            : layoutSetupRef.find((item) => item.moduleId === checkedModule[0].itemId).row
+            : layoutSetupRef.find((item) => item.moduleId === checkedModule[0].itemId).row //멀티모듈이면 전체 합, 체크된 한개의 열
 
-          if (sumRowCount > maxRow || sumColCount > trestlePolygon.trestleDetail.moduleMaxCols) {
-            swalFire({ text: getMessage('module.layout.setup.max.count', [maxRow, trestlePolygon.trestleDetail.moduleMaxCols]) })
+          if (sumRowCount > maxRow || sumColCount > maxCol) {
+            swalFire({ text: getMessage('module.layout.setup.max.count', [maxRow, maxCol]) })
             return
           }