When IR-ISO Created or when internal requistion and Internal Sales order is required

Same LE, Same OU, 2 Inv Orgs:

Sub-inventory transfer/Inter-Org transfer should be sufficient (though you can still create IR-ISO provided the pre-requisite setups are done in Shippng Networks (Invnetory super user -->Set up -->Organzation -->Shipping networks and Internal order Flag is enabled )

Same LE, Different OU, 2 Inv Orgs:

Sub-inventory transfer/Inter-Org transfer should be sufficient (though you can still create IR-ISO provided the pre-requisite setups are done in Shippng Networks (Invnetory super user -->Set up -->Organzation -->Shipping networks and Internal order Flag is enabled )

Different LE (OU and Inv Orgs will always be different):

IR-ISO has to be created since goods have to be sent out of the country.

Pre-requisites for IR-ISO:

1. Internal Orders attribute at item setup
2. Internal Orders attribute at Shipping networks setup
3. Purchasing Options setup (what will be the ISO order type)
4. Inter-company transaction setup

Note: Transfer Type, FOB and other setups in Shipping Network should not affect IR-ISO creation as long as the above pre-requisites are taken care.