A company's obligations related to producer responsibility may change if there are changes in its business operations, product range, sales channels, supply chain, or method of fulfilling obligations.

If the company fulfills its obligations through a PRO, the PRO must be notified of significant changes. If the company fulfills its obligations independently, it must verify whether the change needs to be reflected in PROTO or in the reporting. If a company is unsure whether a change affects its obligations, assistance should be sought before data or reports go unsubmitted.