✗ Spend too much time discussing who will be the lead registrant

✓ Act in time and establish a timeline for your registration

✗ Assume that someone else will do your work for you and register the substance

✗ Underestimate the time and resources required to prepare the dossier

✓ Take the initiative in SIEFs that are crucial for your business, especially when no other SIEF member seems to be willing to move ahead

✗ Disclose confidential or commercially sensitive information

✓ Focus your discussions on getting things done in the SIEF – and if you cannot agree on how to distribute work among the SIEF members, consider hiring a consultant

✗ Delay

✓ Agree on a robust cost-sharing model

✗ Favour some SIEF members over others

✓ Treat the company/person you are negotiating with as you would expect to be treated

✓ Provide without unnecessary delays the information needed to proceed with the preparation of the joint registration dossier

✓ Keep track of all communication between SIEF members