Why does the pin code not automatically appearing in transport window during voucher entry?
If the pin code of party not updated in party master then it will not pick automatic during voucher entry. You can follow these steps to update pin code of account in their master:
Step 1: Go to administration section then click on master menu.
Step 2: Choose account option then click on modify tab.
Step 3: Select the required master then update the pincode in party master and save it.