# TmuxError.unsupportedVersionMessage(reported:required:operation:)

- **Package:** libtmux-swift
- **Language:** Swift
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-swift/blob/e72fb5c17ab54996233b76b037c3b94a46e55685/Sources/LibTmux/TmuxError.swift#L106
- **Page:** https://libtmux.org/en/swift/latest/reference/tmuxerror-unsupportedversionmessage(reported-required-operation-)/

```
unsupportedVersionMessage(
    reported: String, required: String, operation: String
) -> String
```

What to tell a person whose tmux is older than the supported floor.

The refusal happens before the command is sent, so nothing was sent.
The remedy is the same for every caller: upgrade tmux and restart the
server, or pin the previous libtmux release.

## Parameters

- `reported` (`String`)
- `required` (`String`)
- `operation` (`String`)