This counter tracks how many incoming RTCP packets — whether Error Repair requests, Rapid Channel Change requests, or plain Receiver Reports — the VQE-S rejected because it had already reached its limit on active RTCP receivers. Administrators use it as a clear capacity-exhaustion signal for RTCP feedback processing specifically. For example, a rising rejected-RTCP count during a large live event indicates the server's RTCP receiver capacity, not just its RCC or ER-specific limits, is being exceeded.