Figure 4 gives the impression that the provider submits attachments and data elements.  That would imply that attachments and data elements are two different things, while the text below the figure indicates that attachments are either supporting information or data elements where data elements are data such as member id and claim id.  Suggest to only use "attachments" in the figure to enable it to cover supporting information and data elements.

The figure also uses the term "re-association" which is ambiguous.  The title indicates for attachments, which would imply it is not only for additional data (which would require "re-association") but also on the original submission.  Suggest to drop "for re-association" in the figure.

 The term Attachment is earlier defined in 2.6 as supporting information, not using the term data elements.  In this context it would seem that supporting information can only go as attachments, which seems to imply a signed/reviewed document.  However, the intent of ePA is that data is gathered and submitted automatically within an agreed to trust framework thus supporting information could be pushed as a data set wtihout manual review, without e-signature by a user, and without it being packaged as a document as that has no relevance.  Suggest that the term attachment is used for a subset of supporting information that does have a manual review, person's e-signature, and document format requirement to avoid encumbering all prior-auth submissions to have to increase documentation burden on the provider when data can be gathered and submitted automatically.