If you selected Allow substitutions on the Allocation or Build tab in the BOM Settings, you can swap components with alternative components.
Note: There is no change to the quantity, only the component.
Open: Processing > New Allocation or Processing > Record Built Items.
The Substitute Componentwindow appears.
Note: Only stock items that are set up as alternative items for the component stock will be displayed. Set up alternative items in the Stock Control module.
The Name appears automatically.
The component is substituted with the alternative component.
If the component appears on multiple BOM records then there is a separate row for each quantity required.
Overview
Reference