This is a type of application which allow you to vary existing planning permissions.
A Non Material Amendment (NMA), also known as a S.96a application, allows you to make very minor changes to an approved scheme which is not considered to materially affect the original permission. NMA applications should be determined within 4 weeks, and once approved, sit alongside, rather than replace the original permission.
See also Minor Material Amendment (MMA)
Also referred to as:
NMA, S.96a application