In 2019 and 2020, the IMP held a series of online discussions with its Practitioner Community to debate and find consensus (norms) on three different aspects of impact management. These were impact monetisation, impact ratings and standardisation in impact management. This brief paper shares the findings from the discussion on what can and cant be standardized in impact management topics. This is a summary of a longer paper, that was published as part of a series of papers by the IMP. All three of the impact management discussion documents can be found here.