Deprecation notice for Classic Schema Validation (#20067)

Author: patriciasantaana

src/content/docs/api-shield/reference/classic-schema-validation.mdx

@@ -1,15 +1,26 @@
 ---
-title: Classic Schema Validation
+title: Classic Schema Validation (deprecated)
 pcx_content_type: how-to
 type: overview
 head:
   - tag: title
-    content: Configure Classic Schema Validation
+    content: Configure Classic Schema Validation (deprecated)
+sidebar:
+  badge:
+    text: Deprecated
+  order: 1
+  label: Classic Schema Validation 
 
 ---
 
 import { GlossaryTooltip } from "~/components"
 
+:::caution[Deprecation notice]
+Classic Schema Validation has been deprecated. 
+
+Upload all new schemas to [Schema Validation 2.0](/api-shield/security/schema-validation/). 
+:::
+
 Use the **API Shield** interface to configure [API Schema Validation](/api-shield/security/schema-validation/), which validates requests according to the <GlossaryTooltip term="API schema">API schema</GlossaryTooltip> you provide.
 
 Before you can configure Schema Validation for an API, you must obtain an API Schema file matching our [specifications](/api-shield/security/schema-validation/#specifications).