Budget amount of the reserve of the budget, ex-tax, displayed (for information) on the budget line screen (cannot be modified). The amount of the budget reserve can be entered as soon as the budget is created. The reserve is included in the budget, this amount must be strictely lower than the budget amount. The budget amount, minus the reserve determines the available amount that can be divided in budget lines. This reserve can be used all the along the envelope's life, before or after approval The lower the bugdet reserve amount, the higher the left-to-distribute amount. The higher the bugdet reserve amount, the lower the left-to-distribute amount. After approval, it is limited to the available amount, left-to-distribute in budget lines.