The "PortfolioItem Flow State" field is visible for all users on Portfolio Items. There is a request to hide or disable this field when it is not being used by the organization.
Symptoms:
Rally SAAS
The PortfolioItem Flow State is a built-in system field in Rally. It is designed to facilitate state mapping for the Portfolio Kanban and other board views. System-defined fields of this nature currently do not support visibility toggling.
Currently, there is no way to disable or hide the PortfolioItem Flow State field in Rally. This is considered expected product behavior.
If this functionality is required for your workflow, please submit an Enhancement request using the Rally Feedback page.