diff --git a/erpnext/regional/doctype/datev_settings/datev_settings.json b/erpnext/regional/doctype/datev_settings/datev_settings.json
index 6860ed3..39486df 100644
--- a/erpnext/regional/doctype/datev_settings/datev_settings.json
+++ b/erpnext/regional/doctype/datev_settings/datev_settings.json
@@ -28,7 +28,8 @@
    "fieldtype": "Data",
    "in_list_view": 1,
    "label": "Client ID",
-   "reqd": 1
+   "reqd": 1,
+   "length": 5
   },
   {
    "fieldname": "consultant",
@@ -42,7 +43,8 @@
    "fieldtype": "Data",
    "in_list_view": 1,
    "label": "Consultant ID",
-   "reqd": 1
+   "reqd": 1,
+   "length": 7
   },
   {
    "fieldname": "column_break_2",
@@ -102,4 +104,4 @@
  "sort_field": "modified",
  "sort_order": "DESC",
  "track_changes": 1
-}
\ No newline at end of file
+}