Guide / Every rule

Multi-instance without what it needs

The check compat/loop-characteristics, in the group Engine compatibility.

Error

Why it matters

A multi-instance element with no input collection, or with an output collection but no output element, has nothing to iterate over or to gather.

How to fix it

Set the input collection, and the output element when there is an output collection.

Where you see it

The Problems tab lists it under Engine, the editor marks the element on the canvas, and penstock check reports it as compat/loop-characteristics. It checks the diagram against the engine and the version it is written for: the version in the file's modeler:executionPlatformVersion, or the newest one when the file has none. Operaton and CIB seven are checked as Camunda 7. This check is free.

To turn it off, set camunda-compat/loop-characteristics or compat/loop-characteristics to off in your .bpmnlintrc. See Validation.

Rule details

Read more: Validation. All rules: Every rule.