How do I resolve unsupported EL expressions?

1. In Sandboxes, create a sandbox or enter an existing one. Make sure the sandbox has the Structure tool.

2. From the sandbox Tools menu, select Structure. 

3. In Structure, scan for unsupported EL expressions from the banner of the page.

4. Review and resolve the unsupported EL expressions by editing them. See What are the supported and unsupported EL expressions?
   Note: It's always recommended you resolve unsupported EL expressions to avoid potential issues in future Redwood experiences.