The constructor XX is defined in both types

Hello,

I'm tring to translate the xml schema in term of OCaml types :

> type element = string Xml.Attributes.t
> and group = string Xml.Attributes.t * sub_group option
> and choice = string Xml.Attributes.t * sub_choice list
> and sequence = string Xml.Attributes.t * sub_choice list
>
>
> and sub_choice =
>   | Element of element
>   | Group of group
>   | Choice of choice
>   | Sequence of sequence
>
> and sub_group =
>   | Choice of choice
>   | Sequence of sequence
>

The compilation give me the warning :

> the constructor Choice is defined in both types sub_choice and sub_group

> the constructor Sequence is defined in both types sub_choice and sub_group.

I know I could use polymorphic variants to prevent this, but I want to 
restrict each type with the contructors defined in the schema. (I also 
want to be as close as possible with the xsd names types).

My question is : what do I risks ? I did some tests and this seems to 
work correctly in pattern matching and I did not see where it could 
break the code.

Thank you