SNAC(15,02)/07D0/04C4  CLI_UNREGISTER_USER 

User unregistration request. Use this carefully - this request completely removes your uin from server. You should provide password for this uin. ICQ server should ack this request using SNAC(15,03)/07DA/00B4.

 00 15   word   SNAC family
 00 02   word   SNAC subtype
 00 00   word   SNAC flags
 xx xx xx xx   dword   SNAC request-id
 00 01   word   TLV.Type(1) - encapsulated META_DATA
 xx xx   word   TLV.Length
 xx xx   word (LE)   data chunk size (TLV.Length-2)
 xx xx xx xx   dword (LE)   request owner uin
 D0 07   word (LE)   data type: META_DATA_REQ
 02 00   word (LE)   request sequence number
 C4 04   word (LE)   data subtype: META_UNREGISTER_USER
 xx xx xx xx   dword (LE)   uin to unregister
 xx xx   word (LE)   password string length
 xx .. xx 00   asciiz   password string

Example SNAC dump with flap header:

  2A 02 79 75 00 1E 00 15 00 02 00 00 00 07 00 02 *.yu............
  00 01 00 10 0E 00 8F E4 5E 00 D0 07 08 00 C4 04 ........^.......
  8F E4 5E 00 04 00 31 32 33 00                   ..^...123.


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