I've come across this term repeatedly in a paper I'm reading and from the context, I'm not sure what it means.
Context:
The building of a proper dataset from the available
internal/external data requires that a bank develop policies and
procedures to address its several features (ie
perimeter of application, observation period, reference date, de minimis modelling thresholds and data treatment).
Best Answer
It might have a technical meaning within a particular field that I’m not aware of.
However, just using the words in their common meanings:
Perimeter
Application
In this sense, perimeter of application would define the area inside which something is useful. Outside this area the thing would not be applicable.