How to update BPA Line (Item Attribute) sections columns like Availability, Lead Time Days through B

Summary

How to update BPA Line (Item Attribute) sections columns like Availability, Lead Time Days through BPA FBDI template, In which table/column these data get stored

Content

We have below columns at BPA Line Details in Item Attributes(Section): We have requirement to updated below column. May I know how to update below columns through BPA FBDI template. In Which table these columns values get stored.

Long Description    
Supplier Item Auxiliary Identifier    
Supplier URL    
Manufacturer    
Manufacturer URL    
Manufacturer Part Number    
Attachment URL    
Alias    
Lead Time Days    
UNSPSC    
Image URL    
Thumbnail Image    
Availability    
Rounding Factor    
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