Profit center Party Relationships setups for 75+ BU

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Hi,

Our Business is that we can send stock from any BU to any BU, there are 75+ BU, The profit center Business unit Party relationships needs to be defined for each, This will lead thousands of combination  ( each BU needs to be assigned to 74 other BU), so and is very time consuming

Any way to upload this setup, the Setup CSV gives error for file ORA_FOS_SUPPLIER_ASSOCIATION CSV if we add more than 1 line to upload in it it give error JBO-27014: Attribute ProcurementBuId in SupplierAssociationEO is required.JBO-27014: Attribute ProcurementBuId in SupplierAssociationEO is required.. but this ProcurementBUid is not in CSV