diff --git a/modules/route/front/agency-term/createInvoiceIn/index.js b/modules/route/front/agency-term/createInvoiceIn/index.js
index 7ab8adbfa..0198ab80f 100644
--- a/modules/route/front/agency-term/createInvoiceIn/index.js
+++ b/modules/route/front/agency-term/createInvoiceIn/index.js
@@ -62,6 +62,7 @@ class Controller extends Section {
     }
 
     onSubmit() {
+        if (this.dms.files.length > 1) throw new UserError('You cannot attach more than one document');
         const query = `dms/uploadFile`;
         const options = {
             method: 'POST',
@@ -72,10 +73,7 @@ class Controller extends Section {
             },
             transformRequest: files => {
                 const formData = new FormData();
-
-                for (let i = 0; i < files.length; i++)
-                    formData.append(files[i].name, files[i]);
-
+                formData.append(files[0].name, files[0]);
                 return formData;
             },
             data: this.dms.files
@@ -83,7 +81,6 @@ class Controller extends Section {
         this.$http(options).then(res => {
             if (res) {
                 const addedDms = res.data;
-                if (addedDms.length > 1) throw new UserError('You cannot attach more than one document');
                 this.$.watcher.updateOriginalData();
 
                 const params = {