How can enable the unit cost field on the Details tab of Sales Order?

My understanding is the only way to make the field editable is using a Workflow.  I had a similar issue and I think support told me that you cannot use a workflow on that screen.

Please let me know if you find a way to do this.  I would love to know how.

Thanks @Naveen B.  This is a huge help.

I’m now trying get the unit cost on the opportunity document details.  I’ve added the new workflow and the event handler but the OpportunityMaint doesn’t have a definition for  Base.Document and Base.Transactions but I’m not sure those are necessary since I removed that code from the sales order line and it still has the unit cost enabled.  

When I add a line to the opportunity document details the unit cost is editable but then when I select an inventory item the unit cost is no longer editable.  I’m not sure what I can do to change that behavior. 

Hi @vpoulson  I just updated my comment in below ticket. Hope that helps!

@Naveen Boga:  This was very helpful. 

Are we able to modify the code to pull the last sold price instead for that item for that customer?  I think pulling from ARTran maybe?

I just tried to implement this solution.  I had to uncheck the “disabled” on the two tables circled in order to edit the Unit Cost on a completed order.  If I don’t uncheck those boxes, the save icon does not activate when I change the value in the field.

Will this cause any problems?  

Has anyone successfully used this approach in production and has it worked through the entire workflow?

Our need is for non-stock items to be added to a Sales Order as a Cost Only entry but the cost is difference from use to use.

We need to make sure the cost is included in downstream invoicing and since it’s not a Stock Item, there should be no inventory transaction, just a straight expense.