The GRI standards consist of Universal standards and Topic standards. Each of the standards not only provides requirements, which are mandatory instructions, but also recommendations. They include where a course of action is recommended but not required and guidance, which includes information, explanations and examples for better understanding.
Universal standards
GRI 101: Foundation — Sets out the reporting principles, which include stakeholder inclusiveness, context, materiality and completeness, along with guidelines for preparing a sustainability report under the GRI standards
GRI 102: General disclosures — Cover the provision of contextual information about the entity including strategy, governance, stakeholder engagement and reporting process
GRI 103: Management approach — Designed to use with each material topic in a sustainability report, providing a narrative report into why the topic is material, where impacts may occur and how the organisation is managing those impacts