My custom object Project Team has a Public Read/Write OWD. The profile Regional Manager has a Modify all access to the Project Team custom object. When trying to login as the Regional Manager, I cannot delete a record in that object. Any ideas? Thank you!
When selected 'Modify All' it means that we have overridden the sharing settings and security. If Modify All is selected, then obviously Delete permission is there, as said here.
I would suggest you retry and let us know if you are still stuck.