I don't agree.
The file type is recognized but did not work.
2 options :
1/ the opération is really not supported (and not an error) : I would expect a message "This opération is not supported" with eventually a link to an url explaining how to do.
2/ the opération should work but an error happend. A message like "An unexpected error occured." and, for exemple, a link to this forum would be nice.

But "E_ADEPT_ACSM_NO_FULLFILLMENT_TOKEN" is, according to me, not an option for end users ....

Mike