[CF1] add details on serial numbers in posture checks

Author: deadlypants1973

src/content/partials/cloudflare-one/posture/service-provider-intro.mdx

@@ -1,8 +1,7 @@
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 inputParameters: param1
-
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-import { Markdown } from "~/components"
+import { Markdown } from "~/components";
 
-Cloudflare Zero Trust can integrate with {props.one} to require that users connect to certain applications from managed devices. This service-to-service posture check uses the WARP client to read endpoint data from {props.one}. Devices are identified by their serial numbers.
+Cloudflare Zero Trust can integrate with {props.one} to require that users connect to certain applications from managed devices. This service-to-service posture check uses the WARP client to read endpoint data from {props.one}. Devices are identified by their serial numbers. If multiple devices have the same serial number, we cannot accurately match a Cloudflare device with a third-party provider device. Customers need to use unique serial numbers to ensure accurate device matching.