Do you know whether we can change transaction type when we create credit in Contract Management?

Summary:

Do you know whether we can change transaction type when we create credit in Contract Management?

I didn't find the locate that we can select transaction type in screen of create credit.

When I create credit, it is created AR transaction of just 1 of Transaction Type:"売上値引"(Sales Allowance)

I think we can select transaction type in AR, but isn't there in PPM?

Please let me know.

Thanks,

Mayuko