Why a selected subcatalogue cannot establish robustness

Suppose a proposed calculation lists response columns $n_1,\dots ,n_L$ and produces $zN=0$. If an allowed omitted counterterm has response $n_{\ast }$ with

then $z$ is not invariant under the complete normalization class. The equality $zN=0$ remains a true statement about the printed submatrix, but its physical interpretation changes.

A complete catalogue may be redundant. Independence is not required. Coverage is required.