Once these processes have been established for your first report and your data prepared, the preparation process of future reports may require less effort. We recommend that you maintain both the records of the process you used to produce the report and the data that includes a list of your data sources and the tools or any internal reports used. Stewards are required to maintain documentation for a period of five years from the date the report was due as all reports may be subject to third party review.
Each year, weights and material categories should be verified to ensure accuracy going forward. We recommend that you review your processes prior to reporting each year to ensure the accuracy of your reports as retroactive adjustments due to methodology changes are not permitted.