I tracked down NY Pub 93, "New York State Modernized e-File (MeF) Guide For Return Preparers For Tax Year 2021". I also tracked down TurboTax's list of supported forms for their personal tax products.
The MeF Guide clearly says pdf attachments are no longer supported.
The MeF guide clearly says IT-242 is supported and the software must fully support it, including e-file, if it supports it at all.
The TTax supported forms list clearly says if a form isn't listed it isn't supported. IT-242 is NOT on the list.
So anybody with a conservation easement credit is stuck filing by paper or finding a paid preparer with software that DOES support the form fully - Intuit's professional products support IT-242 as well as lots of the other misc. credit forms; no idea how user-friendly they make it though.
BTW I have access to TaxSlayer Pro Online (used for VITA tax prep), it doesn't support IT-242 either - you can code the summary amount onto IT-201-ATT as code 302 but you get a warning that NY e-file is not possible.
