User Guide > About the User Guide > Codebeamer: Common Concepts > Trackers > Dynamic Pick-List Fields > Standard Distribution and Aggregation Rules
Standard Distribution and Aggregation Rules
This topic defines the certain distribution and aggregation rules that are available for the applicable fields. A field can have no rules at all, either an aggregation rule or a distribution rule, or both. A field with an aggregation rule, but without a distribution rule, can only be edited as long as the item or issue doesn't have children.
Standard Distribution Rules
Rule
Description
Applicable for
Set
Set the value of the child field to be the same as the value of the parent field.
All fields
Default
If the child field is empty, set its value to be the same as the value of the parent field.
All fields
Least
Set the child field value to the least of parent and child field values.
All fields
Greatest
Set the child field value to the greatest of parent and child field values.
All fields
Fraction
Set each child field value to a fraction of the parent field value.
Numeric fields
SubSet
Remove all child field values that are not also parent field values.
Multiple choice fields
SuperSet
Add missing parent field values to the child field values.
Multiple choice fields
Close recursively
Upon close of a parent, recursively close all children.
Status
Close restricted
Deny closing a parent, as long all children have not been closed.
Status
Standard Aggregation Rules
Rule
Description
Applicable for
Minimum
Set the parent field value to the minimum of all child field values.
All fields
Maximum
Set the parent field value to the maximum of all child field values.
All fields
Sum/Total
Set the parent field value to the sum or total of all child field values.
Numeric fields
Average
Set the parent field value to the average of all child field values.
Numeric fields
Union
Set the parent field value to the union of all child field values that include all distinct field values that appear in any child.
Multiple choice fields
Intersection
Set the parent field value to the intersection of all child field values that include all common field values that appear in every child.
Multiple choice fields
Mean status
Set the parent status to a mean or average status of all children.
Status
Close upwards
Close the parent, after the last child has been closed.
Status
If a children for an item exist, an aggregated field without a distribution rule becomes read-only.
For static choice fields: Minimum, Maximum, Least and Greatest are determined according to the order of field choice values, as defined via Tracker > Configure > Choice Lists.
If the internal order of choice values is logically descending like the standard Codebeamer severity values, an aggregated field can show the logically highest field value if the aggregation rule is Minimum.
Was this helpful?