diff --git a/src/hooks/module/useTrestle.js b/src/hooks/module/useTrestle.js
index a584876c..963c4cf7 100644
--- a/src/hooks/module/useTrestle.js
+++ b/src/hooks/module/useTrestle.js
@@ -370,7 +370,20 @@ export const useTrestle = () => {
                 rack.value.moduleTpCd === leftRowsInfo.moduleTotalTp &&
                 rack.value.moduleRows === leftRowsInfo.rowsInfo.reduce((acc, row) => acc + row.count, 0)
               )
-            } else {
+            } else if (leftRowsInfo.rowsInfo.length >= 2) {
+              //C1C2C3인 경우
+              if (rack.value.moduleTpCd.length === 6) {
+                // 변환 C1C2만 있는경우 C3 0개로 추가해준다.
+                let newLeftRowsInfo = normalizeModules(rack.value.moduleTpCd, leftRowsInfo)
+
+                return (
+                  rack.value.moduleTpCd === newLeftRowsInfo.moduleTotalTp &&
+                  rack.value.moduleRows === newLeftRowsInfo.rowsInfo.reduce((acc, row) => acc + row.count, 0) &&
+                  Number(rack.value.moduleTpRows1) === newLeftRowsInfo.rowsInfo[0].count &&
+                  Number(rack.value.moduleTpRows2) === newLeftRowsInfo.rowsInfo[1].count &&
+                  Number(rack.value.moduleTpRows3) === newLeftRowsInfo.rowsInfo[2].count
+                )
+              }
               return (
                 rack.value.moduleTpCd === leftRowsInfo.moduleTotalTp &&
                 rack.value.moduleRows === leftRowsInfo.rowsInfo.reduce((acc, row) => acc + row.count, 0) &&
@@ -387,7 +400,19 @@ export const useTrestle = () => {
                 rack.value.moduleTpCd === rightRowsInfo.moduleTotalTp &&
                 rack.value.moduleRows === rightRowsInfo.rowsInfo.reduce((acc, row) => acc + row.count, 0)
               )
-            } else {
+            } else if (rightRowsInfo.rowsInfo.length === 2) {
+              if (rack.value.moduleTpCd.length === 6) {
+                // 변환 C1C2만 있는경우 C3 0개로 추가해준다.
+                let newRightRowsInfo = normalizeModules(rack.value.moduleTpCd, rightRowsInfo)
+
+                return (
+                  rack.value.moduleTpCd === newRightRowsInfo.moduleTotalTp &&
+                  rack.value.moduleRows === newRightRowsInfo.rowsInfo.reduce((acc, row) => acc + row.count, 0) &&
+                  Number(rack.value.moduleTpRows1) === newRightRowsInfo.rowsInfo[0].count &&
+                  Number(rack.value.moduleTpRows2) === newRightRowsInfo.rowsInfo[1].count &&
+                  Number(rack.value.moduleTpRows3) === newRightRowsInfo.rowsInfo[2].count
+                )
+              }
               return (
                 rack.value.moduleTpCd === rightRowsInfo.moduleTotalTp &&
                 rack.value.moduleRows === rightRowsInfo.rowsInfo.reduce((acc, row) => acc + row.count, 0) &&
@@ -404,7 +429,19 @@ export const useTrestle = () => {
                 rack.value.moduleTpCd === centerRowsInfo.moduleTotalTp &&
                 rack.value.moduleRows === centerRowsInfo.rowsInfo.reduce((acc, row) => acc + row.count, 0)
               )
-            } else {
+            } else if (centerRowsInfo.rowsInfo.length === 2) {
+              if (rack.value.moduleTpCd.length === 6) {
+                // 변환 C1C2만 있는경우 C3 0개로 추가해준다.
+                let newCenterRowsInfo = normalizeModules(rack.value.moduleTpCd, centerRowsInfo)
+
+                return (
+                  rack.value.moduleTpCd === newCenterRowsInfo.moduleTotalTp &&
+                  rack.value.moduleRows === newCenterRowsInfo.rowsInfo.reduce((acc, row) => acc + row.count, 0) &&
+                  Number(rack.value.moduleTpRows1) === newCenterRowsInfo.rowsInfo[0].count &&
+                  Number(rack.value.moduleTpRows2) === newCenterRowsInfo.rowsInfo[1].count &&
+                  Number(rack.value.moduleTpRows3) === newCenterRowsInfo.rowsInfo[2].count
+                )
+              }
               return (
                 rack.value.moduleTpCd === centerRowsInfo.moduleTotalTp &&
                 rack.value.moduleRows === centerRowsInfo.rowsInfo.reduce((acc, row) => acc + row.count, 0) &&
@@ -499,7 +536,19 @@ export const useTrestle = () => {
                 rack.value.moduleTpCd === leftRowsInfo.moduleTotalTp &&
                 rack.value.moduleRows === leftRowsInfo.rowsInfo.reduce((acc, row) => acc + row.count, 0)
               )
-            } else {
+            } else if (leftRowsInfo.rowsInfo.length === 2) {
+              if (rack.value.moduleTpCd.length === 6) {
+                // 변환 C1C2만 있는경우 C3 0개로 추가해준다.
+                let newLeftRowsInfo = normalizeModules(rack.value.moduleTpCd, leftRowsInfo)
+
+                return (
+                  rack.value.moduleTpCd === newLeftRowsInfo.moduleTotalTp &&
+                  rack.value.moduleRows === newLeftRowsInfo.rowsInfo.reduce((acc, row) => acc + row.count, 0) &&
+                  Number(rack.value.moduleTpRows1) === newLeftRowsInfo.rowsInfo[0].count &&
+                  Number(rack.value.moduleTpRows2) === newLeftRowsInfo.rowsInfo[1].count &&
+                  Number(rack.value.moduleTpRows3) === newLeftRowsInfo.rowsInfo[2].count
+                )
+              }
               return (
                 rack.value.moduleTpCd === leftRowsInfo.moduleTotalTp &&
                 rack.value.moduleRows === leftRowsInfo.rowsInfo.reduce((acc, row) => acc + row.count, 0) &&
@@ -575,7 +624,19 @@ export const useTrestle = () => {
                 rack.value.moduleTpCd === rightRowsInfo.moduleTotalTp &&
                 rack.value.moduleRows === rightRowsInfo.rowsInfo.reduce((acc, row) => acc + row.count, 0)
               )
-            } else {
+            } else if (rightRowsInfo.rowsInfo.length === 2) {
+              if (rack.value.moduleTpCd.length === 6) {
+                // 변환 C1C2만 있는경우 C3 0개로 추가해준다.
+                let newRightRowsInfo = normalizeModules(rack.value.moduleTpCd, rightRowsInfo)
+
+                return (
+                  rack.value.moduleTpCd === newRightRowsInfo.moduleTotalTp &&
+                  rack.value.moduleRows === newRightRowsInfo.rowsInfo.reduce((acc, row) => acc + row.count, 0) &&
+                  Number(rack.value.moduleTpRows1) === newRightRowsInfo.rowsInfo[0].count &&
+                  Number(rack.value.moduleTpRows2) === newRightRowsInfo.rowsInfo[1].count &&
+                  Number(rack.value.moduleTpRows3) === newRightRowsInfo.rowsInfo[2].count
+                )
+              }
               return (
                 rack.value.moduleTpCd === rightRowsInfo.moduleTotalTp &&
                 rack.value.moduleRows === rightRowsInfo.rowsInfo.reduce((acc, row) => acc + row.count, 0) &&
@@ -635,6 +696,31 @@ export const useTrestle = () => {
     return { moduleTotalTp, rowsInfo }
   }
 
+  function normalizeModules(rackTpCd, data) {
+    // rackTpCd를 숫자를 기준으로 자른다.
+    const allModules = rackTpCd.match(/[A-Za-z]+\d+/g) || [] // 모든 모듈 유형
+
+    // 현재 존재하는 모듈 유형을 추출
+    const existingModules = data.rowsInfo.map((row) => row.moduleTpCd)
+
+    const result = { ...data, rowsInfo: [...data.rowsInfo] }
+
+    // 없는 모듈을 추가 (count: 0)
+    allModules.forEach((module) => {
+      if (!existingModules.includes(module)) {
+        result.rowsInfo.push({ moduleTpCd: module, count: 0 })
+      }
+    })
+
+    // rowsInfo를 C1, C2, C3 순서로 정렬
+    result.rowsInfo.sort((a, b) => allModules.indexOf(a.moduleTpCd) - allModules.indexOf(b.moduleTpCd))
+
+    // moduleTotalTp를 C1C2C3로 설정
+    result.moduleTotalTp = allModules.join('')
+
+    return result
+  }
+
   // itemList 조회 후 estimateParam에 저장
   const getEstimateData = async () => {
     const surfaces = canvas.getObjects().filter((obj) => obj.name === POLYGON_TYPE.MODULE_SETUP_SURFACE)