msnp-wiki/docs/commands/nak.md

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# Introduction
`NAK` is a command introduced with [MSNP2](../versions/msnp2.md).
It is a Switchboard Server command, without a response payload.
Used as a negative response to [MSG](msg.md) N.
# Client/Request
This command can not be sent from the client.
# Server/Response
`NAK TrID`
# Examples
## As a response to MSG N
```
C: MSG 1 N 68
MIME-Version: 1.0
Content-Type: text/plain;charset=UTF-8
message
S: NAK 1
```
## Invalid context
*Inherited from being an unimplemented command.*
```
C: NAK 2
```
Server disconnects client.
# Known changes
None.