Authoring – Models

These guides cover the lifecycle of a decision model in the authoring editor: creating, importing, organizing, syncing, and publishing. All require Authoring access.

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The Authoring home

When you open Authoring, you land on the home page below. It’s where every model starts — either from scratch, from an existing source, or by reopening recent work. The page has three areas, plus the masthead at the top:

• Create — start a brand-new model. Pick New Decision for a full DMN model (.dmn, multiple decisions and a diagram) or New Decision Table for a single decision-table model (.dmns). The Try sample link under each opens a ready-made example instead of a blank file.
• Import — bring in a model that already exists. Use From URL to import a Git repository, GitHub Gist, Bitbucket/GitLab snippet, or any file URL (More options… lets you choose a branch, auth session, or encoding). Use Upload to drag in local files/folders or pick them with Select files… / Select folder….
• Recent models — your previously opened workspaces. When empty it shows “Nothing here”; otherwise each workspace appears as a card you can reopen or manage.
• Masthead — the top bar with the Decision Control logo, an info icon, and the gear icon that opens the global Settings (Git Providers, Theme, AI Assistant).

The how-tos below walk through each of these actions.

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The editor toolbar

Most model actions start from the toolbar at the top of the editor. The numbered callouts match the screenshot below.

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The editor canvas

The Editor tab holds the diagram canvas — the visual surface where the decision model is built. The rest of the screen wraps around it:

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Model tabs

Three tabs across the top group the model’s content:

• Editor — the diagram itself (the canvas described below).
• Data types — the structures, lists, and enumerations the model’s inputs and outputs use. The count in the tab badge is the number of types defined.
• Included models — other DMN or PMML models reused inside this one. The count is the number of currently included models.

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Palette (node types)

The strip on the left edge holds the DMN node types. Drag any of them onto the canvas:

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Default DRD

A Decision Requirements Diagram (DRD) is one view of the decision model. The Default DRD ▾ selector at the top-left switches between diagrams — large models can split their logic across several DRDs (for example, one per business sub-process).

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Empty-state shortcuts

On a blank model, the canvas shows two scaffolding shortcuts so you don’t have to drag from the palette to start:

• New Decision Table… — creates a Decision node with a Decision Table already filled in, ready for you to add rows.
• New Decision with Input Data… — creates a Decision node connected to one or more Input Data nodes, with the logic stubbed out.

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Canvas tools

The circular buttons in the top-right corner are diagram utilities:

• Auto-arrange — re-runs the layout so nodes don’t overlap.
• Preview — opens a preview of the rendered diagram.
• Properties / info — shows model-level metadata (name, namespace, etc.).
• Theme — toggles between light and dark themes for the editor.

The bottom-right cluster handles canvas navigation: zoom in, zoom out, fit to screen, and lock (prevent accidental edits). The DMN 1.6 badge at the bottom shows the DMN specification version the editor produces.

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How to create a new model

Start a blank decision model in the editor. Steps:

1. Open Authoring.
2. In the Create section, click New Decision for a full DMN model, or New Decision Table for a single decision-table (DMNS) model.

Verify: The editor opens with an empty canvas and the new file name in the toolbar.

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How to try a sample model

Open a ready-made example to explore DMN features. Steps:

1. Open Authoring.
2. In the Create section, click Try sample under Decision or Decision Table.

Verify: The editor opens populated with the sample model.

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How to import an existing model

Bring a model that already exists into Decision Control — either from a Git source by URL, or by uploading files from your computer. Prerequisites: Authoring access. For private sources (a protected repo, gist, or snippet), a Git account configured in ⚙ Settings → Git Providers. What you import must contain a supported model file: .dmn (Decision) or .dmns (Decision Table). The editor also recognizes .bpmn, .bpmn2, and .pmml. Verify: A workspace is created and the model opens in the DMN editor. It also appears under Recent models on the Authoring home (replacing the “Nothing here” empty state).

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How to open a recent model

Reopen a model you worked on before. Prerequisites: At least one existing workspace. Steps:

1. Open Authoring.
2. In Recent models, click the workspace card (expand it to pick a specific file).

Verify: The selected model opens in the editor.

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How to delete a model

Remove a workspace and its files you no longer need. Steps:

1. Open Authoring.
2. On the workspace card in Recent models, open the kebab (⋮) menu.
3. Click Delete and confirm in the dialog.

Verify: The workspace card disappears from Recent models.

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How to rename a file

Change the name of the model file you’re editing. Prerequisites: A file open in the editor. Steps:

1. In the editor toolbar, click the file-name field (left side).
2. Type the new name and press Enter (press Esc to cancel).

Verify: The toolbar shows the new name; an error tooltip appears only if the name conflicts or is invalid.

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How to add a new file to the workspace

Add another model or supported file to the current workspace. Steps:

1. In the editor toolbar, click New file.
2. Choose a file type from the dropdown (or import from URL/upload).

Verify: The new file opens and appears in the file switcher.

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How to switch between files in a workspace

Navigate among the files in the current workspace. Prerequisites: A workspace with multiple files. Steps:

1. Click the file switcher (file-name area) in the toolbar.
2. (Optional) Search, sort, toggle list/carousel view, or check Only modified.
3. Click the file you want.

Verify: The editor switches to the chosen file.

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How to add nodes to the diagram

Build the decision model by placing nodes on the canvas, naming and typing them, and wiring them together. Prerequisites: A model open on the Editor tab.

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Add a node

1. From the palette on the left edge, drag the node type you need onto the canvas (see the palette table above for what each type represents).
2. Click the node to give it a clear name (e.g., Applicant Age, Approved Amount).
3. Set its type in the node’s properties — either a built-in type (number, string, boolean, date, …) or a custom data type.

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Connect nodes

Decisions consume data from other nodes; you express that with an arrow:

1. Hover the source node until its edge handles appear.
2. Drag from the source’s edge to the target node — the editor draws the right kind of arrow automatically:
   • Input Data → Decision or Decision → Decision = Information Requirement
   • BKM → Decision = Knowledge Requirement
   • Knowledge Source → Decision/BKM = Authority Requirement

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Define a decision’s logic

Each Decision node needs a way to compute its output. Open the decision (click its body) and choose one of the standard DMN expression forms:

• Decision Table — rows of conditions/actions. The most common form; rules are easy to read and audit.
• Literal expression — a single FEEL expression.
• Context — a set of named entries (a small record) where the last entry is the result.
• Function definition — used inside BKMs; declares parameters and a body.
• Invocation — calls a BKM with a set of named arguments.
• Relation — a table-like list of records.
• List — an ordered list of expressions.

Verify: The nodes appear on the canvas, the arrows reflect the requirements you drew, each decision shows its expression form, and the “This DMN’s Diagram is empty” card is gone.

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How to define data types

Declare the shape of the data your inputs, decisions, and outputs use. Custom types make models easier to read, catch typos at design time, and keep test data consistent. Prerequisites: A model open in the editor.

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What you can build

Every type extends one of the DMN built-in (base) types: string, number, boolean, date, time, date and time, days and time duration, years and months duration, Any (no specific type). On top of those, you can compose three custom shapes:

• Structure — a composite record with named fields, each with its own type. Example: an Applicant structure with name: string, age: number, address: Address.
• List — an ordered, repeated value of a single type. Example: a List of Income (a list of number).
• Enumeration — a fixed, named set of allowed values. Example: a Risk type that may only be LOW, MEDIUM, or HIGH.

Types can reference each other — a Loan structure can have an applicant field of type Applicant.

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Steps

1. Open the Data types tab.
2. Add a new type and give it a clear name (use PascalCase, e.g., Applicant).
3. Pick the base type or shape:
   • For a Structure, add each field with a name and type.
   • For a List, pick the item type.
   • For an Enumeration, list the allowed values.
4. (Optional) Add constraints to restrict valid values — for example, a range on a number (0..120), a regex on a string, or a date window.

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Use the type

Once defined, the type appears wherever you set a node’s type — on Input Data, Decision, and BKM parameter/result types — and it shows up automatically in the DMN Runner form so you can test against it. Verify: The new type is selectable when typing nodes; the Data types tab count increases by one.

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How to include another model

Reuse decisions and definitions from another model without copying them. Useful for sharing common logic (e.g., a creditScore BKM) or for plugging predictive models into a decision flow. Prerequisites: A model open in the editor; the model you want to include is in the same workspace.

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What you can include

• DMN — pulls in the other model’s Decisions, BKMs, and Data types so you can call/reference them from the current model.
• PMML — pulls in a predictive model (e.g., a regression or classification) so it can be invoked from a DMN decision through a BKM.

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Steps

1. Open the Included models tab.
2. Add the DMN or PMML model to include and give it an alias (the prefix you’ll use in expressions, e.g., risk for a model that exposes a score BKM → referenced as risk.score(...)).
3. (DMN) The included model’s types, decisions, and BKMs become available throughout the current model — for example, when picking a type for a node or invoking a BKM from a decision.
4. (PMML) Wrap the predictive model in a BKM that invokes it; the BKM can then be used inside any decision.

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Remove an inclusion

To stop referencing an external model, remove it from the Included models tab. The editor flags any node that still depends on the removed alias so you can clean them up. Verify: Included types and BKMs are selectable in the editor; the Included models tab count increases by one.

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How to commit changes (create a save point)

Capture a local snapshot of your changes. Prerequisites: Unsaved local changes. Steps:

1. In the editor toolbar, open the kebab (⋮) menu.
2. Click Commit.

Verify: A “Commit created” message appears and the modified indicator clears.

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How to sync with a Git repository

Push, pull, or update a Git-backed workspace. Prerequisites: A Git-backed workspace (the Sync options are absent for local-only workspaces) and a configured Git provider account. Steps:

1. In the editor toolbar, open the Share menu.
2. Choose Push to Git Repository, Pull from Git Repository, or Update Gist/Snippet.

Verify: The sync completes without an error alert; remote state reflects your changes.

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How to download a model

Export the current file, an SVG image, or the whole workspace. Prerequisites: A file open. Steps:

1. In the toolbar, open the Share menu → Download.
2. Pick Current file, the SVG image item, or All files (ZIP).

Verify: The browser downloads the .<ext>, .svg, or .zip file.

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How to embed a model

Generate an embeddable view of the model for another site. Prerequisites: A file open. Steps:

1. In the toolbar, open the Share menu → Other → Embed….
2. Configure the options in the dialog and copy the embed snippet.

Verify: The embed dialog shows a snippet you can copy.

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How to delete the current file

Remove the file currently open in the editor. Steps:

1. In the toolbar, open the kebab (⋮) menu.
2. Click Delete <file name> and confirm.

Verify: The file closes; if it was the last file, you return to the Authoring home.

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How to publish (deploy) a model

Deploy a decision model so it becomes an executable API endpoint. Prerequisites: Authoring access and Publish access. Steps:

1. With the model open, click Publish (top-right of the toolbar).
2. In the Deploy dialog, confirm and optionally choose to activate the deployed models.

Verify: The deploy dialog reports success and offers to activate the published models.