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Status model

Model processes and states: states, transitions, permissions and rules – modelled graphically.

KONZEPT LOW-CODE UPDATED: JUL 2026 APPLIES TO NUCLOS 4.2026.X

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What is a status model?

A status model defines which states a business object can take and which transitions exist between them. Use it to model business processes (ordered → delivered → paid) or simple states (active/inactive).

Rights and rules

Permissions can be set per state and transition; transitions can trigger rules (validations, calculations, e-mails). New records always start in the first state.

Menu: Configuration → Status model

Prerequisite

If the status model flag is set on the business object, defining a status model is mandatory – the form cannot be opened otherwise.

Draw the model

The graphical editor offers: select tool, insert state, transition (drag from source to target state via the green dot), comment, delete, print and zoom. On the right you pick the business object(s) and optionally an action the model applies to.

Status model editor: states and transitions.

A status change as shown in the web client.

Configure a state

Name (DE/EN) – shown as the current state (nuclosState).
Numeral – ordering of the next possible transitions.
State icon (16×16), button label (DE/EN), button icon and colour (rich client).
Hint text (DE/EN) in the status-change dialog, active tab.

Permissions

In a matrix you set the rights per user group and state:

Colour	Meaning
Green	read and write – fields active
Yellow	read only – fields disabled
Grey	not visible – area left empty

In addition, attributes can be made mandatory from a certain state, and subforms can be granted create/delete rights (+/-).

Configure a transition

Automatic transition – not triggered manually (dashed line); the first transition is always automatic.
Standard transition – shows the status-change bar in the record (a continuous path is required).
Without confirmation – skips the confirmation dialog.
Rules before/after the change – a gear marks transitions with rules (see rule sets and server rule manager).

The permission on the first transition controls creating new records – without it the New button is greyed out.