Internal Order to reflect end customer item number.

Hi there,

The question i have (i beleive) should be straightforward but i am pulling my hair out at the moment (what little i have left!).

The scenario is as follows:

Customer demand is captured in an inventory org - ORG A via EDI order type (reflects Customer Item on SO)

Where necessary items are ordered from Manufacturing org - ORG B using IR.

Both Org A & ORG B customer standard uses Item identifier as "CUST"

There are cross references in ORG A for customer item and cross references in ORG B to reflect both Internal Item & Customer item.

When order import is run, the order creation fails with reason "Item Validation resulted in Errors" in the corrections form.