how to create a new revision after a workflow is closed?

Hi there,

We need to create a new revision for a CAD document which is included in a ECO, but that ECO is closed already. The current state of that CAD document is released. When I try to create a new revision, it says ---

This action cannot be performed on CAD '100071-001' because it is used on Simple ECO 'ECO-100019'

Any suggestions on how this should be resolved?

Thanks in advance.

Best,

Gang