FME Workbench color codes—ArcGIS Pro

Available with Data Interoperability license.

FME Workbench uses color to indicate the status of your transformers and connectors.

Transformers

Transformers display three possible color states on the Properties button. The button is located on the upper right corner of every transformer.

FME transformer color codes
Color code	Description
The same color as the transformer with an ellipsis (…)	You can use the transformer with its existing parameters.
Yellow with an ellipsis (…)	The transformer contains default settings, but you have not yet accepted them. You can use the transformer in this state, but your workspace may produce unexpected results. Click the Properties button, examine the value, edit the value if necessary, and click OK.
Red with an exclamation point (!)	One of the mandatory fields is blank. You must enter a valid value before running the translation.

Connectors display three possible color states at each endpoint.

FME connector color codes
Color code	Description
Green input arrow	The connection is set.
Red input arrow	The port has no input. This is not an error. A port with no input can be intentional and a valid design. However, it is good practice to verify red arrows to avoid unexpected errors when running the translation. If this is a feature port, no features are entering the connection. If this is an attribute port, no values have been set.
Yellow output arrow	The port will not generate output when running the translation.