Update index.md

Author: muhammadatifjav

src/connections/destinations/catalog/actions-webhook/index.md

@@ -23,3 +23,7 @@ Segment's Webhooks (Actions) destination uses internet protocol and HTTP callbac
 7. Enable the destination and configured mappings.
 
 {% include components/actions-fields.html settings="true"%}
+
+## Batch Size Considerations
+
+In Webhook Actions mapping, the default value of batch size is '1000'. It can be changed to lower or higher value, however, note that there is a upper limit of '4000' as well.