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
|Less than 15
|Greater than or equal to 15 and less than 30
|Greater than or equal to 30
Impact Assessment selections are available:
- Under Investigation
- Investigated but determined insignificant
- Investigated, no action required
- Investigated, rescheduling required
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
Impact Analysis Results
The results shown on the
Impact Analysis tab include the following
- Potential Impact. This section includes the
CIs in the
Affected CIs field. It is divided into the
following three lists, which display the ID, title, category, and state of each
- Affected Services. Service CIs, such as
"IT Service" or "Business Service."
- Affected Consumers. CIs that model
end-users or customers.
- Affected Configuration Items. CIs that
represent IT assets, such as applications or servers.
- Schedule Conflicts. This section lists other
change items scheduled to be implemented during the same period of time. It
includes the ID, title, implementation start and end dates, and state of each
- Related Activity. This section includes
incidents and other change items that are associated with the same services and
CIs. It is divided into the following two lists, which display the ID, title,
type, and state.
- Active Incidents against Affected Services and
CIs. The items in the Incident Management application that have one
or more of the same CIs in the
Affected CIs field.
- Active Change Requests against Affected Services and
CIs. Other change items that have one or more of the same CIs in
Affected CIs field.
- Analysis Result. This number is calculated
based on the number of affected services, consumers, configuration items, and
detected collisions; and the weights assigned to each of them. It is updated
automatically each time the report is generated.
A warning icon
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:
- Impact Assessment. The option that was
selected during the review.
- Impact Assessment Date. The date and time
the review took place.
- Impact Level (when reviewed). The level of
impact when the review took place.
- Analysis Result (when reviewed). The
analysis result that was calculated when the review took place. This can differ
from the current, real-time value.
You can also use the Change Calendar Feed included in the Service
Calendar to see active changes by month, week, and day.
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