Something like deserdia but google turns up nothing, means list of desired characteristics.
I think you mean desiderata, singular desideratum:
something desired as essential
Desiderata, Latin for "desired things", and the title of a famous poem that begins "Go placidly amid the noise and haste, and remember what peace there may be in silence..."
n .pl Desiderata (sing. Desideratum):
- Something considered necessary or highly desirable:
"The point is not that the artist has 'penetrated the character' of his sitter, that commonplace desideratum of portraiture" (Robert Hughes).
Source: The American Heritage® Dictionary.