"xxx" is used to name both a type1 and a type2. Duplicate names like this may cause confusion for developers and users.
The same name was used to name both a Field and Measure, or a Variable and Measure
Using the same name for two resources, for example using "Sales" for both a Field and Measure, can appear ambiguous when used in an expression.
Sales + Margin
Is "Sales" a measure or a field?