Cash available in a period almost exhausted for several document items

What causes this issue?

The current cash consumption is &V2& less than the available cash for
the period for several document items from item &V1& onward. Budget
control on outgoing amounts (<DS:DE.BUAVC_CEILTYPE>ceiling type</>
Expenditures) raised this message for the following combination of cash
control ledger, fiscal year, period, and control object:
&V3&&V4&

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.