diff --git a/frontend/src/modules/sendNumMgt/components/NumberDetailPop.vue b/frontend/src/modules/sendNumMgt/components/NumberDetailPop.vue
index 11c8250..28950d3 100644
--- a/frontend/src/modules/sendNumMgt/components/NumberDetailPop.vue
+++ b/frontend/src/modules/sendNumMgt/components/NumberDetailPop.vue
@@ -57,7 +57,7 @@
             <th>제출서류</th>
             <td>
               <div class="sender">
-                <p v-for="(item, idx) in docList" v-if="item.docTpCd !== '06' && item.docTpCd !== '07' && item.docTpCd !== '13' && item.docTpCd !== '14'">{{ item.docTitle }} ({{ formatFileSize(item.fileSize) }})</p>
+                <p v-for="(item, idx) in docList" v-if="item.docTpCd !== '06' && item.docTpCd !== '07' && item.docTpCd !== '13' && item.docTpCd !== '14'">{{ item.docTitle }}</p>
               </div>
               <p class="file">파일형식 : jpg, png, pdf, tiff (최대 5MB)</p>
             </td>
@@ -66,8 +66,8 @@
             <th>사업자등록증</th>
             <td>
               <div class="sender">
-                <p v-for="(item, idx) in docList" v-if="item.docTpCd === '06'">{{ item.docTitle }} ({{ formatFileSize(item.fileSize) }}) <br></p>
-                <p v-for="(item, idx) in docList" v-if="item.docTpCd === '07'">{{ item.docTitle }} ({{ formatFileSize(item.fileSize) }})</p>
+                <p v-for="(item, idx) in docList" v-if="item.docTpCd === '06'">{{ item.docTitle }} <br></p>
+                <p v-for="(item, idx) in docList" v-if="item.docTpCd === '07'">{{ item.docTitle }}</p>
               </div>
               <p class="file">파일형식 : jpg, png, pdf, tiff (최대 5MB)</p>
             </td>
@@ -76,8 +76,8 @@
             <th>본인 확인</th>
             <td>
               <div class="sender">
-                <p v-for="(item, idx) in docList" v-if="item.docTpCd === '13'">{{ item.docTitle }} ({{ formatFileSize(item.fileSize) }}) <br></p>
-                <p v-for="(item, idx) in docList" v-if="item.docTpCd === '14'">{{ item.docTitle }} ({{ formatFileSize(item.fileSize) }})</p>
+                <p v-for="(item, idx) in docList" v-if="item.docTpCd === '13'">{{ item.docTitle }} <br></p>
+                <p v-for="(item, idx) in docList" v-if="item.docTpCd === '14'">{{ item.docTitle }}</p>
               </div>
               <p class="file">파일형식 : jpg, png, pdf, tiff (최대 5MB)</p>
             </td>
@@ -136,15 +136,7 @@ export default {
     
   },
 	methods :{
-    formatFileSize(bytes,decimalPoint) {
-      if(bytes == 0) return '0 Bytes';
-      var k = 1000,
-          dm = decimalPoint || 2,
-          sizes = ['Bytes', 'KB', 'MB'],
-          i = Math.floor(Math.log(bytes) / Math.log(k));
-      return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
-    },
-            
+
 		// 모달 띄우기
     numberDetailPopOpen(props){
 
diff --git a/frontend/src/modules/sendNumMgt/components/NumberRegPop.vue b/frontend/src/modules/sendNumMgt/components/NumberRegPop.vue
index 4335263..face291 100644
--- a/frontend/src/modules/sendNumMgt/components/NumberRegPop.vue
+++ b/frontend/src/modules/sendNumMgt/components/NumberRegPop.vue
@@ -99,7 +99,7 @@
             </div>
 
             <div class="attach">
-              <p v-if="fileType === 1" class="essential list">통신서비스 이용증명원</p>
+              <p v-if="fileType === 1" class="essential list"><span>*</span>통신서비스 이용증명원</p>
               <p v-if="fileType === 2" class="essential list">발신번호의 통신서비스 이용증명원</p>
               <input type="file" ref="communicationFile" style="display: none" @change="readCommunicationFile"
                      accept=".jpg,.png,.pdf,.tiff"/>
@@ -247,6 +247,21 @@ export default {
     this.formReset();
   },
   methods: {
+    
+    returnFileSize(number, event) {
+      if (number === 0){
+        this.row.title = '발신번호 등록';
+        this.row.msg1 = '첨부파일을 확인해 주세요';
+        // this.getParent('NumberList').commonModalOpen(this.row)
+        this.$parent.$refs.commmonModal.alertModalOpen(this.row);
+        event.target.files[0] = '';
+        return false;
+      } 
+      if(number > 1) {
+        return (number/1048576).toFixed(2) + 'MB';
+      }
+    },
+            
     searchIdPop() {
       this.$refs.admnListPop.adminNmPopOpen();
     },
@@ -335,7 +350,7 @@ export default {
         })
         button.innerText = 'X'
         const root = document.getElementById('delegationNm');
-        root.appendChild(text);
+        root.textContent = `${file.name}  ${ '('+ this.returnFileSize(file.size, event) + ')'}`;
         root.appendChild(button);
         this.delegationFile = file;
       }
@@ -366,7 +381,7 @@ export default {
         })
         button.innerText = 'X'
         const root = document.getElementById('attorneyNm');
-        root.appendChild(text);
+        root.textContent = `${file.name}  ${ '('+ this.returnFileSize(file.size, event) + ')'}`;
         root.appendChild(button);
         this.attorneyFile = file;
       }
@@ -398,7 +413,7 @@ export default {
         })
         button.innerText = 'X'
         const root = document.getElementById('corporateCertificateNm');
-        root.appendChild(text);
+        root.textContent = `${file.name}  ${ '('+ this.returnFileSize(file.size , event) + ')'}`;
         root.appendChild(button);
         this.corporateCertificateFile = file;
       }
@@ -430,7 +445,7 @@ export default {
         })
         button.innerText = 'X'
         const root = document.getElementById('delegatedBusinessNm');
-        root.appendChild(text);
+        root.textContent = `${file.name}  ${ '('+ this.returnFileSize(file.size, event) + ')'}`;
         root.appendChild(button);
         this.delegatedBusinessFile = file;
       }
@@ -462,7 +477,7 @@ export default {
         })
         button.innerText = 'X'
         const root = document.getElementById('authorizedBusinessNm');
-        root.appendChild(text);
+        root.textContent = `${file.name}  ${ '('+ this.returnFileSize(file.size , event) + ')'}`;
         root.appendChild(button);
         this.authorizedBusinessFile = file;
       }
@@ -494,7 +509,7 @@ export default {
         })
         button.innerText = 'X'
         const root = document.getElementById('delegateCertificateNm');
-        root.appendChild(text);
+        root.textContent = `${file.name}  ${ '('+ this.returnFileSize(file.size, event) + ')'}`;
         root.appendChild(button);
         this.delegateCertificateFile = file;
       }
@@ -526,7 +541,7 @@ export default {
         })
         button.innerText = 'X'
         const root = document.getElementById('delegatedIdentificationNm');
-        root.appendChild(text);
+        root.textContent = `${file.name}  ${ '('+ this.returnFileSize(file.size, event) + ')'}`;
         root.appendChild(button);
         this.delegatedIdentificationFile = file;
       }
@@ -558,7 +573,7 @@ export default {
         })
         button.innerText = 'X'
         const root = document.getElementById('tenureNm');
-        root.appendChild(text);
+        root.textContent = `${file.name}  ${ '('+ this.returnFileSize(file.size, event) + ')'}`;
         root.appendChild(button);
         this.tenureFile = file;
       }
@@ -589,7 +604,7 @@ export default {
         })
         button.innerText = 'X'
         const root = document.getElementById('businessNm');
-        root.appendChild(text);
+        root.textContent = `${file.name}  ${ '('+ this.returnFileSize(file.size, event) + ')'}`;
         root.appendChild(button);
         this.businessFile = file;
       }
@@ -620,7 +635,7 @@ export default {
         })
         button.innerText = 'X'
         const root = document.getElementById('identificationCardNm');
-        root.appendChild(text);
+        root.textContent = `${file.name}  ${ '('+ this.returnFileSize(file.size, event) + ')'}`;
         root.appendChild(button);
         this.identificationCardFile = file;
       }
@@ -651,7 +666,7 @@ export default {
         })
         button.innerText = 'X'
         const root = document.getElementById('identificationEvidenceNm');
-        root.appendChild(text);
+        root.textContent = `${file.name}  ${ '('+ this.returnFileSize(file.size, event) + ')'}`;
         root.appendChild(button);
         this.identificationEvidenceFile = file;
       }
@@ -684,8 +699,9 @@ export default {
         })
         button.innerText = 'X'
         const root = document.getElementById('communicationNm');
-        root.appendChild(text);
+        root.textContent = `${file.name}  ${ '('+ this.returnFileSize(file.size, event) + ')'}`;
         root.appendChild(button);
+        //root.appendChild( `${this.returnFileSize(file.size)}`);
         this.communicationFile = file;       
       }
     },
@@ -715,7 +731,7 @@ export default {
         })
         button.innerText = 'X'
         const root = document.getElementById('otherBusinessNm');
-        root.appendChild(text);
+        root.textContent = `${file.name}  ${ '('+ this.returnFileSize(file.size, event) + ')'}`;
         root.appendChild(button);
         this.otherBusinessFile = file;
       }
diff --git a/src/main/java/kr/co/uplus/ez/api/sendNumMgt/SendNumMgtService.java b/src/main/java/kr/co/uplus/ez/api/sendNumMgt/SendNumMgtService.java
index 4cbc4b0..ac981a0 100644
--- a/src/main/java/kr/co/uplus/ez/api/sendNumMgt/SendNumMgtService.java
+++ b/src/main/java/kr/co/uplus/ez/api/sendNumMgt/SendNumMgtService.java
@@ -379,7 +379,7 @@ public class SendNumMgtService {
 					// DOC FILE UPLOAD.
 					String ext = FileIoUtils.getExtension(multipartFiles.get(j).getOriginalFilename());
 					// File Nm : [reg_req_no]_[doc_no]_[doc_tp_cd].확장자
-					String fileNm = regReqNo + "_" + docTpCd.get(j).substring(1,2) + "_" + docTpCd.get(j) + "." + ext;
+					String fileNm = regReqNo + "_" + ("" + Integer.parseInt(docTpCd.get(j))) + "_" + docTpCd.get(j) + "." + ext;
 					String titleNm = multipartFiles.get(j).getOriginalFilename();
 					long fileSize = multipartFiles.get(j).getSize();