EDIT: This was an error on my part (a Status Field Configuration on one of the entity type was not set properly). Ben_xzj found the problem.
I have this error message when trying to create a new asset:
create failed (reason_code 6): Invalid field value, update failed [ 5 - Update failed for [Asset.sg_status_list]: ‘wtg’ is not a valid status. Valid statuses: ‘rdy’, ‘ip’, ‘rev’, ‘apr’, ‘rtk’, ‘hld’, ‘cncl’.]
This bug only happens if I remove the Status “Waiting to start” in Traking Setting > Asset > Status.
Workaround: Put back Waiting to Start status in tracking settings and hide the status.