which version of metadata did Instance Identity Documents become available

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-identity-documents.html
which version of metadata is required for Instance Identity Documents
I have some systems that are answering
[ec2-user ~]$ curl http://169.254.169.254/
1.0
2007-01-19
2007-03-01
2007-08-29
2007-10-10
2007-12-15
2008-02-01
2008-09-01
2009-04-04
latest

They return null for curl http://169.254.169.254/latest/dynamic/instance-identity/document