Valence parameters that were applied to at least five molecules in the target QM dataset were chosen for optimization. Parameters that are not chosen for optimization retain the same values as the Parsley 1.3.0 force field. With a new automated setup, using OpenFF-BespokeFit and OpenFF-QCSubmit, the fitting process was schematized where for a particular ForceBalance run, the set of training targets and the parameters to be optimized were stored in a json file for reproducibility. The data file, , includes the selected optimized geometries and torsion scans tagged by their QCArchive record numbers, and a list of SMIRKS patterns of valence parameters to be optimized.