1. Go to Stock > Products
2. Click the coloured bar and select the options for Negative PG Number and Attributes Need Updating? - Yes.
The products listed, require the attributes updating. Please note that stock codes that are assigned to the attribute Not Assigned will not show, therefore you may wish to select Any for Attributes Need Updating?
To apply attributes:
1. Go to the Extra Info tab in the stock product record then select Add/ Edit Attributes.
2. You will then need to select an Attribute Group > Select a Name from the drop down and then a Value from this name selecting Add in-between each name/value.