diff --git a/docs/content/docs/api/error-codes.mdx b/docs/content/docs/api/error-codes.mdx
index 6b5e533c..57220045 100644
--- a/docs/content/docs/api/error-codes.mdx
+++ b/docs/content/docs/api/error-codes.mdx
@@ -217,6 +217,7 @@ Returned when the request conflicts with existing data.
 **Common causes:**
 - Trying to create a resource that already exists
 - Duplicate unique values
+- Deleting something whose state does not allow it yet, such as an API key that can still authenticate
 
 **Example:**