diff --git a/apps/web/src/services/service-account/components/ServiceAccountBaseInformationForm.vue b/apps/web/src/services/service-account/components/ServiceAccountBaseInformationForm.vue
index d7a4319410..a2a145cf27 100644
--- a/apps/web/src/services/service-account/components/ServiceAccountBaseInformationForm.vue
+++ b/apps/web/src/services/service-account/components/ServiceAccountBaseInformationForm.vue
@@ -88,7 +88,6 @@ const state = reactive({
     })),
     isSameValueWithOrigin: computed(() => isEqual(state.formData, state.originForm)),
     isAllValid: computed(() => ((invalidState.serviceAccountName === false)
-        && (state.serviceAccountManagerId !== '')
         && !state.isSameValueWithOrigin
         && (serviceAccountPageGetters.isTrustedAccount ? true : (state.isProjectFormValid || state.originForm?.projectForm?.selectedProjectId))
         && state.isTagsValid
@@ -104,7 +103,7 @@ const initFormData = (originForm: Partial<BaseInformationForm>) => {
     // init validation
     state.isCustomSchemaFormValid = true;
     state.projectForm.selectedProjectId = originForm?.projectForm?.selectedProjectId;
-    state.serviceAccountManagerId = originForm?.serviceAccountManagerId;
+    state.serviceAccountManagerId = originForm?.serviceAccountManagerId ?? '';
 };
 
 /* Api */