Hi, Thank you for the swift reply.

As you suggest in the example above, I can choose which inventory to use in the BOM, but here comes another question. It let me choose the inventory of the lowest level of BOM(HopsA and B_wheat). But I have many batches of "velvetDelight_full_tank" and I can not choose those as well. In the production process, we made "velvetDelight_full_tank" first as a semi-product, so we only need to choose which batch of "velvetDelight_full_tank" then can link to lower-level material already.