The WTS have sent out a letter to all elders to be discussed at elders meetings trying to ensure that all JWs have a copy of this document lodged with the congregation secretary.
Each book study overseer has to make a list of how many of his group have completed an AHD and each secretary has to make a list of how many copies he has. The body of elders are told to "discuss as a body how best to provide assistance for those who have not yet completed this important document." Apparently "many have evidently not filled in the document & few have lodged it with the cong secretary."
It would seem that the problem is that there are numerous occasions when an unconscious or very ill witness is in hospital & a form cannot be located. There is also particular concern that elderly ones don't have a document or at least , haven't completed one when they are lucid.