I have created Product Metrics fields dependency for two picklist values.
When I try to remove the picklist values (From Values to --None--), it works fine in the Product Metrics page. But It causes an error when I update the value (From Values to --Select--) in the Product Metrics on the My Accounts.
For the workaround, I have added "None" picklist value for the customer.
Would it be possible to update the values to none as a scpoe of the Enhancement?