This repository contains supplementary material for the publication “GO-Plan: A Goal-Oriented Method for FAIRification Planning.” The files “Documentation template” and “Documentation template (example)” provide descriptions (and descriptions with examples, respectively) of the suggested documentation that should be designed during the execution of GO-Plan. The file “GO-Plan - Experiment Questions” describes the questions used in the validation sessions of the method. The file “Tutorial - Handouts” contains all handouts (e.g., mock case descriptions, situation cards) provided during the validation sessions. Finally, the file “Tutorial - Data collected” contains the results of the questionnaires collected during validation, along with the analysis of this data.