Location wise freight Bill

we have business in many states in India & having separate gst registration No.
we have have purchased goods from
Gujrat state supplier.The purchase invoice is in favour of various state location.
The same goods transported from Gujrat to our various location.
The transporter address is in Maharashtra, hence he raised his freight invoice in the name of our Maharashtra location unit & same is accounted in the books of Maharashtra location books of account.
Therefore we paid RCM on freight
charges as Sgst + Cgst.
My question is -
1) It is correct?
2) Is required ,each location wise freight bill
3) Is cross charges valuation question arises.