The phrase "limited applicability" means that something is only useful or relevant in certain specific situations or circumstances, and may not be applicable or helpful in other situations. Full definition
Despite its promise, its high operating costs and relative inefficiency had heretofore limited its applicability in most countries. (treehugger.com)
The 45 % income replacement target (excluding Social Security and assuming no pension income) from retirement savings was found to be fairly consistent across a salary range of $ 50,000 - $ 300,000; therefore the savings rate suggestions may have limited applicability if your income is outside that range. (fidelity.com)
I'm sure Ms. Clayton is speaking honestly of her own experiences, but as a NYT bestselling writer, her experiences are of very limited applicability to the majority of other writers. (writerunboxed.com)