Line-items
Line-items are the smallest unit of change in a simulation. Each line-item defines how the value of a single node is adjusted within an assumption.
Why it is relevant
- Makes changes to model drivers explicit and controllable
- Supports granular, targeted simulations
- Keeps alternative assumptions comparable and transparent
How it works
A line-item represents one concrete change to one node.
Each line-item:
- Is always assigned to exactly one assumption
- Affects exactly one simulation-enabled node
- Describes how that node’s values change (absolute or relative)
- Can be filtered to apply only to specific parts of the data
By combining multiple line-items within an assumption, complex simulations can be built from small, explicit changes.
Line-items can also have variants, allowing alternative versions of the same change (for example optimistic vs. pessimistic).
Using the feature
- Use line-items to express precise changes to individual drivers.
- Combine multiple line-items to represent a broader assumption.
- Use variants to model mutually exclusive alternatives.
Characteristics
- Line-items can only change simulation-enabled nodes.
- Line-items do not exist on their own; they always belong to an assumption.
Access & permissions
Line-items follow the same permissions as assumptions and scenarios. Users who can edit assumptions can create and modify line-items.
FAQ
What is the difference between an assumption and a line-item? An assumption groups changes conceptually, while line-items define the individual changes.
Can a line-item affect multiple nodes? No. Each line-item applies to exactly one node.
Can line-items be reused? Yes. Line-items can be duplicated and adapted.
Are line-items optional? No. Every assumption is built from one or more line-items.
➡️ See the Line-Items section in the FAQs for more questions.