Max 25 keys for GH Apps (#52074)

Co-authored-by: Sam Browning <106113886+sabrowning1@users.noreply.github.com>

content/apps/creating-github-apps/authenticating-with-a-github-app/managing-private-keys-for-github-apps.md

@@ -14,12 +14,14 @@ topics:
 
 After you create a {% data variables.product.prodname_github_app %}, you'll need to generate a private key in order to make requests to the {% data variables.product.product_name %} API as the application itself. For example, you need a private key to sign a JSON Web Token (JWT) in order to request an installation access token. For more information, see "[AUTOTITLE](/apps/creating-github-apps/authenticating-with-a-github-app/generating-a-json-web-token-jwt-for-a-github-app)"
 
-You can create multiple private keys and rotate them to prevent downtime if a key is compromised or lost. To verify that a private key matches a public key, see "[Verifying private keys](#verifying-private-keys)".
+You can create {% ifversion app-key-limit %}up to 25 {% else %}multiple {% endif %}private keys for an app. You should use multiple keys in order to rotate keys without downtime in the event of a key compromise. {% ifversion app-key-limit %}If your application has 25 or more keys, you must delete some before you can create more. {% endif %}
 
-Private keys do not expire and instead need to be manually revoked. For more information about how to revoke a private key, see "[Deleting private keys](#deleting-private-keys)."
+Private keys do not expire and instead need to be manually revoked. For more information about how to revoke or delete a private key, see "[Deleting private keys](#deleting-private-keys)."
 
 You must keep private keys for {% data variables.product.prodname_github_apps %} secure. For more information, see "[Storing private keys](#storing-private-keys)".
 
+To verify that a private key matches a public key, see "[Verifying private keys](#verifying-private-keys)".
+
 ## Generating private keys
 
 To generate a private key:

data/features/app-key-limit.yml

@@ -0,0 +1,6 @@
+# Reference: #https://github.com/github/docs-content/issues/15738
+
+versions:
+  fpt: '*'
+  ghec: '*'
+  ghes: '>=3.15'