"how you attach a pdf."

The program should take care of this.

ProConnect, for example, Form 8915-E last year: "The information from Form 8915-E will be e-filed with the tax return as an IRS approved statement." Lacerte: "Lacerte can automatically generate and attach a PDF of this and other required forms when you e-file. To verify you have this setting activated:" From ProSeries: "The information from Form 8915-E will be e-filed with the tax return as an IRS approved statement."

From the similar angst topic last year:

Because Form 8915-E is new and impacted by recent legislation, it has not been enabled in XML for e-filing, and e-filed returns are to include an attached PDF of Form 8915-E. As an alternative to attaching a PDF of Form 8915-E, to increase e-filing and reduce paper filing, software providers may instead include with the e-filed return a general dependency statement that includes all the information requested on Form 8915-E if they have issues with attaching a PDF. Such a statement should look similar to the following....