Stock Transport Order

Dear Gurus,

I have the following scenario in STO.

In MIGO for goods issue I choose "A07 Goods issue" and in next field "R01 Purchase Order" and enter the PO number.

Actually my company have so many STO process.

I want for a specific STO, to create "Z07 Goods Issue XYZ Company" and in next field "Z01 Purchase Order/Stock Transport Order" or even while creating PO for STO heading should be Stock Transport order. so that STO should dispaly as a Z01.

Did it is possible in the standard configuration, please reply.

thanks.