Unable to create workflow version in Workflow Builder (formerly Maestro) with attachment fields

Hi everyone,

I'm trying to create a workflow in Workflow Builder (formerly Maestro) using a template that includes a Web Form. The process is: through the CLM step "Workflow Builder (formerly Maestro) Workflow", I start a Workflow Builder (formerly Maestro) workflow that sends a Web Form to a partner for them to fill out and attach documents. However, when I click "Create workflow version", I get an error saying that it's not possible because the template contains attachment fields.

Why is that a problem?