The Local Government Ombudsman is a member of the International Ombudsman Institute.
Their membership criteria state
A public institution whether titled Ombudsman, Mediator, Parliamentary Commissioner, People's Defender, Human Rights Commission, Public Complaints Commission, Inspector General of Government, Public Protector or like designation, shall be eligible to become an Institutional member provided it exercises fully the following functions and meets the following criteria:
One of the criteria is.
ii) its role is to protect any person or body of persons against maladministration, violation of rights, unfairness, abuse, corruption, or any injustice caused by a public authority;
Therefore, as a member the LGO is expected to exercise FULLY its role to protect any person against ANY INJUSTICE caused by a public authority.
The criteria clearly states FULLY and ANY INJUSTICE, there are no qualifying words such as significant/material.