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P4 CLI Reference | 2025.1

# P4CHANGE

The hostname and port number of the optional centralized changelist server from which this P4 Server is being configured to get the most recent unused changelist number.

## Usage notes

Used by Client? | Used by Server? | Command-Line Alternative | Can be set in P4CONFIG file?
--- | --- | --- | ---
No | Yes | N/A | N/A

## Value if not explicitly set

Operating System | Value
--- | ---
All | None. If the Perforce service is operating in unicode mode and `P4CHARSET` is unset, P4 Server applications return an error message. See Centralized changelist server (P4CHANGE) in the P4 Server Administration Documentation.

## Examples

P4 Server server examples
`perforce.example.com:1818`
`192.168.0.123:1818`

## Notes

The format of `P4CHANGE` is ``host`:`port``, or port by itself if both the P4 Server and the changelist server are running on the same host.

All servers must be at the same release level.

Port numbers must be in the range `1024` through `32767`.

If a service user is configured, that service user is used to contact the centralized change server and obtain the change number. If not, the built-in `remote` user is used. See Centralized changelist server (P4CHANGE) in the P4 Server Administration Documentation.

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