Can you rename custom transformer ports from the Main canvas tab?

• A. True
• B. False
• C. Not sure
• D. Sometimes

Answer: (B)

In FME, the interface names for a custom transformer’s ports are managed in the Ports tab of the Custom Transformer editor. The Main canvas tab is for laying out and wiring the internal components, not for changing the port names. Renaming a port in the Ports tab updates the transformer’s external interface so users see the new name when they place the transformer in a workspace. Therefore, you can’t rename custom transformer ports from the Main canvas tab; switch to the Ports tab and edit the port names there.