Buyers, through their Solicitations, have the ability to make Seller Attachments for a buy required or optional.  Sellers are able to view the request for attachments in the Bidding Requirements section of the buy.  Please note that pricing information is prohibited to be included in attachments unless specifically requested by the Solicitation. Should the Solicitation request pricing in attachments, Sellers are responsible for including the Unison Marketplace fee within each unit price so it matches their Bid as it appears on the Marketplace..  

For Seller Attachments Required buys, Sellers are required to upload the requested attachment(s) with their bid.  The feature to upload attachments is available at the top of the Line Items page.  For these buys the Seller’s bid cannot be submitted until an attachment is uploaded to the bid.

For Seller Attachments Optional buys, Sellers have the ability to include attachments with their bid using the feature on the Line Items page.