What is the standard way to identify a CBW transaction based on the PO items from SAP ECC.
1. Customs ID is mapped to plant and storage location combination to identify the bonded plant/DC.
2. What should be done at the material level in ECC? Extend Foreign Trade Import tab and activate any standard field to indicate that the material is a bonded product?
Importer in this scenario imports both bonded and unbonded materials using the same PO, the line items needs to identified using a material/plant combination.
If there is no standard field in ECC material master, I am thinking of using default rules in this combination of plant and material.
Jessica is right; you need to set up the Product Special Customs Procedure attributes in GTS. You can do that directly in GTS, or run program /SAPSLL/PRECIP_DISTRIBUTE_R3 in the feeder system. In either case, you then need to distribute the attributes back to the feeder system - that will maintain entries in table /SAPSLL/ECPPA, which you may check with SE16.
Then you also need to transfer the Duty-Paid Stock to GTS, by running transaction /SAPSLL/BWHIDP_R3, which you can also find in the GTS Cockpit ("Initial transfer of Duty-Paid Stock"). It doesn't matter if there IS no stock - the transfer is needed to activate the Product record in the GTS BWH.
Then, it should all work...