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l00p3yl00p3y 

Best Practices Field Validation

Is it possible, once criteria has been met for a picklist field, that variable will not change?
 
 
We currently have a custom field labeled {Account Status} that is a picklist on the page layout of the Account object. Once the selection of Live has been selected as the {Account Status}, I want the field to always remain Live. 
 
-  I can not set validation rules that might throw an error msg. ( we have a lot of code that would need to be changed to handle the exception)
 
- I  can not set the field to Read-Only because of an error (see above)
 
 
Does anyone have any ideas?  I would greatly appreciate it.