[#BloombergLP-balb-ReservationGuard-cancelReserved]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balb.adoc[balb]::xref:BloombergLP/balb/ReservationGuard.adoc[ReservationGuard]::cancelReserved
:relfileprefix: ../../../
:mrdocs:

Cancel the specified `numUnits` from the reserve units guarded by this object. Subtract the `numUnits` from `unitsReserved` and invoke the `cancelReserved` method on the guarded object for `numUnits`. After this operation, the number of reserved units guarded by this object will be reduced by `numUnits`. The behavior is undefined unless `numUnits <= unitsReserved()`.

== Synopsis

Declared in `<balb_reservationguard.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
cancelReserved(xref:BloombergLP/bsls/Types/Uint64.adoc[bsls::Types::Uint64] numUnits);
----


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