Hello, 

I don't think we have a Data Type Rule. It isn't a rule, it is a data form. 

Hi Sam,

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Data type is a data class. 

Assume that you are working on CleanApp Application for an organization MyCorp. If your data type "Customer" is created in implementation then the data type has the following as the class.

MyCorp-CleanApp-Data-Customer.

Right click on the Customer class and click on Definition. then go to history tab, you find  who has updated the your class( Data type)

Thanks for the reply, the history tab is not much informative(already aware of that)

I was in a hunch if there's any other OOTB feature to track