Answer:
unconscious transference
Explanation:
Unconscious Transference: It is described as a memory error that takes place when an eyewitness or an observer to a crime misidentifies a similar but innocent person according to a police listing.
In the given example, the clerk had misidentified the defendant in the police lineup, as the defendant claimed of being innocent. So, it is clear that the clerk might have seen someone else who is familiar with the defendant.