Incorrectly issued - and so having fallen into this? (6)
I believe the answer is:
disuse
'so having fallen into this?' is the definition.
The definition suggests a singular noun which matches the answer.
'incorrectly issued' is the wordplay.
'incorrectly' is an anagram indicator (I've seen this in other clues).
'issued' is an anagram of 'DISUSE'.
'and' is the link.
Can you help me to learn more?
(Other definitions for disuse that I've seen before include "Neglect; abandonment" , "Neglect; desuetude" , "Fall into this state to be unemplyed? (6)." , "Issued (anag)" , "State of not being employed" .)