This paper shows that if interaction-defining tokens are required to preserve standing under admissible redescription, then effective coupling parameters cannot vary arbitrarily without inducing standing failure. When coupling excursions exceed a bounded admissible regime, interaction roles become degenerate, divergent, or non-identifiable across redescriptions, breaking role stability at representational boundaries. Preserving standing therefore requires that coupling parameters remain within a standing-preserving envelope under all admissible redescription paths. The result is conditional and eliminative. It does not posit a generative role for coupling parameters, nor does it propose a mechanism governing their evolution or regulation. Instead, it excludes interpretations in which unrestricted coupling variation is compatible with standing-preserving interaction structure. Effective couplings are thereby constrained to function as standing conditions rather than as freely specifiable descriptors whenever admissible redescription is retained.