When you enter financial transactions, such as Charges, Payments, and Adjustments), you must be attached to a Reference Batch.
A Reference Batch can be Open, Closed, or Archived.
If you are attached to an Open Reference Batch, you can make adjustments and edits to any transaction contained in the Reference Batch (permission driven).
The Date used in the Reference Batch is recorded as the Post Date for all transactions in the Batch.
Most Reports default to the Post Date which is controlled by the date used in the Reference Batch and is key to closing a month's financials.
In User Maintenance, you can set who has specific privileges for Reference Batch actions.
By User: Admin > User Maintenance > User
By Role: Admin > Security Roles > Role