This counts received Phase-2 exchanges that this device explicitly rejected, a distinct outcome from cifIkeGlobalInP2ExchgInvalids, representing negotiations that were well-formed but denied for policy reasons, such as the offered security parameters not matching any configured transform set. A climbing rejects count alongside a low invalids count suggests peers are sending syntactically correct proposals that simply don't match this device's configured IPsec policy, pointing an engineer toward comparing transform sets and proxy IDs between the two ends rather than suspecting packet corruption. This distinction between invalid and rejected matters for correctly diagnosing whether a failing VPN tunnel has a formatting problem or a policy mismatch.