|Packet #||Packet Name||Length||Client||Server||Obsolete|
|byte 0x21||The packet number.|
|byte Sequence||The movement sequence that was blocked.|
|ushort X||The X-axis position to jump back to.|
|ushort Y||The Y-axis position to jump back to.|
|byte Direction||The direction (C#|VB7) the player was facing.|
|byte Z||The Z-axis position to jump back to.|
This is sent by the server to reject a movement request.
Note that sending this packet will reset the client's movement sequence to zero.