omis·sion 
/oʊˈmɪʃən/ noun
plural omis·sions /oʊˈmɪʃən/ noun 1 [count] : something that has not been included or done : something that has been omitted
▪ There are a few omissions in the list/book. 2 [noncount] a : the act of not including or doing something — often + of ▪ I believe that the omission of my name was intentional.
b : the state of being not included in something — often + from ▪ I am surprised by her omission from the team.
▪ There are a few omissions in the list/book.
b : the state of being not included in something — often + from ▪ I am surprised by her omission from the team.
