If you decide to buy $900.00 worth of office supplies without a written request, do you need preapproval?

The requirement for preapproval from the Approving/Budget Official (A/BO) is mandated for purchases that exceed set dollar thresholds, regardless of whether they fall under certain categories like office supplies. In this case, a purchase of $900 is above the typical self-initiated limit, which means preapproval is necessary to ensure that the expenditure aligns with budgetary controls and organizational policies. Such oversight is crucial to prevent misuse of funding and to ensure accountability in government spending.

In the context of the other options, while some may emphasize specific amounts or categorize the items as exempt from preapproval, those considerations do not hold for purchases over the designated limit. Hence, obtaining preapproval for a purchase of this amount is not only a best practice but a strict requirement in the context of Department of Defense procurement regulations.