In release 2024 R1 and later, automatic defaulting for the Coupling Participant and Region List data model values has been removed. For cases saved in release 2022 R1 and earlier, these extended values were not saved. When you open the case in the latest release the values are missing, causing validation errors. To fix this issue, you must manually set the values and re-save the case.

Changes to AEDT case setups may require you to regenerate SCP files. You can update an existing AEDT participant setup in System Coupling using the UpdateParticipant command with the updated SCP file.