/item-vendor (relative to your instance’s /api/v2).
The standard endpoints provide reads and writes, subject to the constraints below.
Search columns: vendorSku
Fields
The pair
itemId and vendorId identifies a supplier relationship. vendorName and vendorCode are read-only lookup fields. Use vendors for the supplier and items for the material.
isArchived is a plain relationship flag. Archived relationships still appear
in list and by-id reads unless you filter them, but they are excluded from an
item’s computed vendorSkus. DELETE /item-vendor/{id} hard-deletes only the
relationship; it does not delete the item or vendor.