RAI Supplier Guide RAI Supplier Guide A guide for suppliers on the RAI evaluation RAI Supplier Guide About the Guide The RAI Supplier Guide is designed to clarify the RAI evaluation for suppliers in more detail. It is an accessible online document that provides:information on how the team can support companies throughout the evaluation processinformation on how evaluations are conducted and results assessed and calculatedthe full set of control questions included in the RAI evaluation and the response optionsthe Terms and Conditions for engaging with the RAI process.