After you have allocated a budget to an WBS element for the first time, the budgeted system status is set. The system status is retained if you take the budget back from the WBS element.
In the Budgeted system status, the following business transactions are forbidden:
You can set the deletion flag for WBS element that have the budgeted status.
The budgeted system status can be reset for WBS elements with the 0 budget by choosing Logistics or Accounting
® Project System ® Controlling budgeting ® Tools ® Reset 'budgeted' status.The system resets the budgeted status if: