Change Impact Analysis

Impact analysis looks at the services, consumers, and assets affected by a change to determine impact of a change on your organization. The handling of RFCs and proposals depend on their impact level and how change managers or CAB members assess the impact.

The impact level is based on a combination of predefined thresholds and the analysis result, which is calculated based on the number of affected services, consumers, assets, and detected conflicts and on the weights assigned to each of them. An implementation date that coincides with another scheduled change is an example of a conflict.

The following table shows the impact levels based on the default thresholds.
Analysis Result Impact Level
Less than 15 Low
Greater than or equal to 15 and less than 30 Medium
Greater than or equal to 30 High
Note: The thresholds can be changed as described in Changing the Impact Level Threshold for Change Management.

The following Impact Assessment selections are available:

Note: Ignored and (None) indicate that the change manager will not take further action based on the impact analysis results, even if that means the RFC will not be approved.

If either the impact level is "Low" or the impact assessment is "Investigated but determined insignificant" or "Investigated, no action required," the RFC is approved and moves to the Approved Changes state and continues through the rest of the workflow. Otherwise, the RFC moves to the CAB Review/Planning state for a formal review of the impact.

Impact Analysis Results

The results shown on the Impact Analysis tab include the following information:

Note: A warning icon image indicates a collision. A collision is detected when other change items have the same implementation time as this RFC; or other change items associated with the same CIs were submitted, under review, or scheduled for implementation.

The results also include the following fields that are populated after a formal impact analysis review:

You can also use the Change Calendar Feed included in the Service Calendar to see active changes by month, week, and day.