UE-OCB entry in Cost Explorer

OCB means "Out-of-Cycle Billing" charge. This is usually individual to each customer, and I would suggest reaching out to support team (opening support case) to clarify this. Such charges may differ from one customer to another, and are often issued on an individual / one-time basis.

Hello,

I'm sorry for the concern these charges may have caused! Our Accounts team will be able to take a closer look into this for you through the Support Center.

Please feel free to create a case here:

https://go.aws/3lSNhPX.

Regards,

- Craig M.