diff --git a/ui/src/views/iam/AddUser.vue b/ui/src/views/iam/AddUser.vue
index 8ef88eb64ce..efec6657f54 100644
--- a/ui/src/views/iam/AddUser.vue
+++ b/ui/src/views/iam/AddUser.vue
@@ -137,7 +137,9 @@
             </a-tooltip>
           </span>
           <a-select
-            v-decorator="['account']"
+            v-decorator="['account', {
+              rules: [{ required: true, message: $t('message.error.required.input') }]
+            }]"
             :loading="loadingAccount"
             :placeholder="apiParams.account.description">
             <a-select-option v-for="(item, idx) in accountList" :key="idx">
@@ -225,7 +227,7 @@ export default {
     this.apiConfig.params.forEach(param => {
       this.apiParams[param.name] = param
     })
-    this.apiConfig = this.$store.getters.apis.authorizeSamlSso || {}
+    this.apiConfig = this.$store.getters.apis.authorizeSamlSso || { params: [] }
     this.apiConfig.params.forEach(param => {
       this.apiParams[param.name] = param
     })
@@ -319,7 +321,7 @@ export default {
 
         if (this.account) {
           params.account = this.account
-        } else if (values.account) {
+        } else if (this.accountList[values.account]) {
           params.account = this.accountList[values.account].name
         }