[#Chainstate-DisconnectTip]
= xref:Chainstate.adoc[Chainstate]::DisconnectTip
:relfileprefix: ../
:mrdocs:

Apply the effects of a block disconnection on the UTXO set and update the mempool.

== Synopsis

Declared in `<validation.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[requires_capability(0x7fb95fa38278, 0x7fb95fa382f0), requires_capability(0x7fb96ac5f1d8, 0x7fb96ac5f250), requires_capability(0x7fb96e9d59f8, 0x7fb96e9d5a70), requires_capability(0x7fb98748b068, 0x7fb98748b0e0)]]
bool
DisconnectTip(
    xref:BlockValidationState.adoc[BlockValidationState]& state,
    xref:DisconnectedBlockTransactions.adoc[DisconnectedBlockTransactions]* disconnectpool);
----

== Return Value

true if the tip was disconnected successfully.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *state*
| Validation state updated with the reason for any failure.
| *disconnectpool*
| Collects the transactions from the disconnected block for later reprocessing.
|===


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