This terms refers to either:

  1. Actual data for a given fiscal year that is imported in from Great Plains Accounting software (ERP);
  2. An Historic Budget that is imported; 
  3. A budget that is setup in Dynamic Budgets; or
  4. A forecast that is setup in Dynamic Budgets.

BudgetIDs are managed in Manage Budgets.

Related Article/s:

How Do I Setup and Display an Actual ERP Reporting BudgetID?