AssumeRole usage with c7n-org

[acutis-expeditus]

Am using c7n-org to execute policy on all AWS accounts.

Using accounts.yml file for the list of accounts that policy needs to be executed

In accounts.yml file, am using role that's

arm:aws:iam::accountID that I am accessing:role/rolename that has access

That above role when used with custodian command and --assume parameter works fine but doesn't work when passed as role in accounts.yml file for c7n-org run

Output of c7n-org command
Access denied api:AssumeRole policy:my-test-policy account:AccountName region:us-east-2