What does anti-signal indicate in KPI Signals?

In ServiceNow Performance Analytics, KPI Signals applies Statistical Process Control (SPC) to monitor automated indicator scores. While a standard signal alerts process owners to a statistically significant change or process shift, an anti-signal explicitly indicates long-term stability. It notifies process owners that a process has consistently remained within expected variation limits over a prolonged period (typically 7 or more consecutive points on a single side of the mean without breaching control limits), confirming that no significant change has occurred.

A. No signal has been detected: An anti-signal is an actively calculated pattern confirming consistent stability, whereas "no signal detected" merely means no threshold rules or stability conditions were triggered.
C. Abnormal variation in the scores of a KPI: Abnormal or special-cause variation triggers a standard signal (such as an out-of-bounds score or unexpected trend), not an anti-signal.
D. A workflow has changed: A workflow or process change leads to variation that manifests as a signal. An anti-signal confirms that the workflow and underlying process have remained unchanged.

1. ServiceNow Official Documentation (Xanadu Release): Performance Analytics & KPI Signals — KPI Signals concepts: Signals and anti-signals. Section: "KPI Signals definitions".

(Identifier: ServiceNow Product Documentation, Performance Analytics Administration Guide)

2. ServiceNow Official Documentation (Washington DC Release): KPI Signals process control rules and signal generation. Section: "Anti-signal detection rules".

(Identifier: ServiceNow Docs, Product Analytics & Process Mining)