Well, you need to do a couple of steps in order to add an Inventory Dimension.
And you need programming to do it.
There is actually a document that explains every step, but I seem to have lost it somewhere.
First you have to add the field into the table InventDim.
Then add it to the FieldGroups into InventDimensions and InventoryDimensions.
Then add your field to the DimIdx index of InventDim table.
Relations if needed (if, for example, they are not set up on the EDT)
Then you have to modify some of the methods on InventDim. I can’t remember which of them - try going through all of them - I think you will know where to add your code.
After that modify the macros InventDimJoin and InventDimSelect
After that you will have to do a search on all AOT searching for InventDimJoin or InventDimSelect or InventDimDevelop.
(Because on some of the forms you will have to add your field to the corresponding field group manually)
I thinks that’s it.
If I do find the document I mentioned earlier, I will upload in here as well.