What does it mean when your orders get amended?

As a side note, I recommend you start prepping your defense for the QMP

Read the amended orders and it will say what is amended

If you're flagged for alcohol related reasons (i.e., Flag code A), then you're prohibited (except in a few cases) of being reassigned until the flag is lifted. Suggest you read up on AR 600-8-2* (especially paragraphs 2-8 and 3-1) and become familiar with the impacts the flag will cause you.

CSM Darieus ZaGara, MSG (Join to see), and SFC (Join to see) all have great comments regarding this - In addition to the amendment, there are long reaching effects you'll have to consider.
-----------------------------------------------------------
* https://armypubs.army.mil/epubs/DR_pubs/DR_a/ARN30769-AR_600-8-2-000-WEB-1.pdf