# Table of contents:

# Introduction

REG is a command introduced with MSNP7

It is a Notification Server command, without either a request or response payload.

Renames an existing group. Replaced with Address Book Service's ABGroupUpdate in MSNP13.

# Client/Request

REG TrID group-id new-group-name {0}

Where group-id is the group's identification number. With ABCHMigrated: 1, this is instead the group's GUID.

Where new-group-name is the name you want to rename group-id to. Has a limit of 127 bytes (URL-encoded characters count as 3 bytes).

Where 0 is always 0. Removed in MSNP10.

# Server/Response

REG TrID {list-version} group-id group-name {0}

Where list-version is the new List Version. Removed in MSNP10

Where group-name is the updated name of the group.

# Examples

# With list versions

Only in MSNP7 to MSNP9.

# Normal use 

C: REG 1 0 example%20group%20rename 0
S: REG 1 256 0 example%20group%20rename 0

# Cannot rename group that doesn't exist yet 

C: REG 2 2 non-existant%20group 0
S: 224 2

# Cannot rename out-of-bounds groups 

C: REG 3 30 example%20out%20of%20bounds%20group 0

Server disconnects client.

# Group name extremely long

NOTE: This has been line-breaked. Lines beginnging with .. followed by a space are continuations of the previous line. 

C: REG 4 0 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
.. AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
.. AAAAAAAAA 0

Server disconnects client.

# Without list versions

# With group IDs

Only in MSNP10 with ABCHMigrated: 0.

# Normal use 

C: REG 5 0 another%20example%20group%20rename
S: REG 5 0 another%20example%20group%20rename

# Cannot rename group that doesn't exist yet 

C: REG 6 2 still%20a%20non-existant%20group
S: 224 6

# Cannot rename out-of-bounds groups 

C: REG 7 30 still%20out%20of%20bounds

Server disconnects client.

# Group name extremely long

NOTE: This has been line-breaked. Lines beginnging with .. followed by a space are continuations of the previous line. 

C: REG 8 0 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
.. AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
.. AAAAAAAAA

Server disconnects client.

# With group GUIDs

Since MSNP10 with ABCHMigrated: 1.

# Normal use 

C: REG 9 d6deeacd-7849-4de4-93c5-d130915d0042 yet%20another%20example%20group%20rename
C: REG 9 d6deeacd-7849-4de4-93c5-d130915d0042 yet%20another%20example%20group%20rename

# Cannot rename group that doesn't exist yet 

C: REG 10 11111111-2222-3333-4444-555555555555 still%20a%20non-existant%20group
S: 224 10

# Cannot use an invalid GUID 

C: REG 11 THIS0IS0-NOT0-A0VA-LID0-GUID0AT0ALL! very%20invalid%20GUID%20there

Server disconnects client.

# Group name extremely long

NOTE: This has been line-breaked. Lines beginnging with .. followed by a space are continuations of the previous line. 

C: REG 12 d6deeacd-7849-4de4-93c5-d130915d0042 AAAAAAAAAAAAAAAAAAAA
.. AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
.. AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

Server disconnects client.

# Command removed

Since MSNP13. 

C: REG 13 f60efbe7-94af-4b16-b926-e4e10878d329 Other%20Friends

Server disconnects client.

# Known changes