One PO over multiple budget years

Summary:

in some Gov organization there is an issue to create PO for 3 years distribution.

It enforce no using BPA 

say there is a tender of 6k USD amount will distributed over 3 years, but the budget is established yearly,

budget manger will force that reservation is only 2k USD for the first year, rules say create only one PO,no use if BPA,

suggested solution to create 3 distribution , but this require to open next 2 year budgetary ,

budget manger does not agree to open for next 2 year.

there is no cost budget used..

how could handle this issue?

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