Copy Condition Values from STO PO to Invoice

Hi.

I need to Copy Freight,Octroi, Entry tax values from STO PO to Invoice, it is possible throough standard config or Routine is required to write?

STO->DEL-Inv(Copy Freight,Octroi, Entry tax values from STO PO)

As i dont want to copy all condition types from STO to Invoice,, i cant maintain Price Source as "A"-PO in VTFL(Del to Inv)

Reg,

Antaa21