Thank you very much for your reply. This particular 1120-S involves a donation of a commercial building and the value is much more than $5,000. The Form 8283 must be signed by the appraiser and the donee organization. Under these circumstances I believe I must attach the signed document in some fashion.
When using the efile attachment process in Proseries, you indicate what type of form is being attached. There are a number of special Form 8283 options, such as Art, Photo, etc. but none of the options appears to apply to a straight forward regular Form 8283.
