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Individual user purchase order processing is controlled by a variety of variables, such as User account where the Account Filter and Filter and Role (and the Permissions assigned to those Roles) are defined for each user, User Preferences, Rules, etc. By default the system will give a warning if the budget's remaining balance will go negative. Remaining balance is either unencumbered balance or unencumbered balance - outstanding requisitions depending on whether the pre-encumbrance module is enabled and the specific rule(s) the district has enabled.
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