Add additional info for `ShowOrderFormField`

diff --git a/pages/php/api/formBuilder/php_api_form_builder-form_fields.md b/pages/php/api/formBuilder/php_api_form_builder-form_fields.md
index 94ed13ab39e0ca1d4bddc6b413e0bf259826a4c7..ffb5f929642136504e343c6e33de0a1481e3e82e 100644 (file)
--- a/pages/php/api/formBuilder/php_api_form_builder-form_fields.md
+++ b/pages/php/api/formBuilder/php_api_form_builder-form_fields.md
@@ -146,6 +146,8 @@ The show order field provides a list of all siblings and the object will be posi
 To insert objects at the very beginning, the `options()` automatically method prepends an additional option for that case so that only the existing siblings need to be passed.
 The default id of instances of this class is `showOrder` and their default label is `wcf.form.field.showOrder`.
 
+{% include callout.html content="It is important that the relevant object property is always kept updated. Whenever a new object is added or an existing object is edited or delete, the values of the other objects have to be adjusted to ensure consecutive numbering." type="info" %}
+
 
 ### `SingleSelectionFormField`