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.
• Open a line-item to type or paste values into its data table. Line-Item Data & Details covers that table and the number formats it accepts, which is where to look if an entry is rejected.

Characteristics

• Line-items can only change simulation-enabled nodes.
• Line-items do not exist on their own; they always belong to an assumption.
• A line-item is locked while someone edits it, so a second person opens it read-only. See Parallel access.

Access & permissions

Line-items follow the same permissions as assumptions and scenarios. Opening the Scenario Manager only needs view access. Creating and modifying line-items needs Full Access on the workspace and at least a Simulator user type. See Licenses, User Types & Access Management.

FAQ

Related

• Assumptions
• Line-Item Data & Details: the data table, and the number formats it accepts
• Line-Item Variants