Accused identification

Certianly such case shall become weak for the prosecution if accused stands unidentified by concerned witnesses. 

Certainly! The presumption of innocence is a legal principle that every person accused of any crime is considered innocent until proven guilty. In this case the presumption will take the shape of conclusion!

As per your concerns!

Wherein police erred to identify an accused or the witnesses failed to identify an accused that inherently weaken the prosecution stance. The identification parade under section 9 of the Evidence Act, 1872 is a substantive piece of evidence i.e., evidence on which alone the Court can base its order of conviction or acquittal is that given by the witness or the police before the Court.

Hope it helps
Regards
Minakshi Bindhani