If you are having issues verifying, locating and creating a USI, please see below reasons and possible fix
1: Please start by checking the USI systems website: https://www.usi.gov.au/ if there is an outage or system fault, you can usually find it listed here: https://www.usi.gov.au/help/system-outages
2: Please check your computers date and time - if the time is more than a minute off, it is likely to cause an error
If the date is not formatted correctly (dd/mm/yyyy) or the date is incorrect, it will also cause an error
3: If the RTO has recently had the legal name or ABN changed, this can also cause an error
OR
4: If you have an error message stating "certificate has been revoked" e.g. as image below
The person who created the Machine Credential needs to log into RAMS and check and re-link the account
A requirement of RAMS once a year
If you are not sure follow from Step 2 using this LINK
If none of the above steps helped, please contact our support line for further assistance