Vernooij, CP wrote:

>"Robert Birdsall" <bsqu...@umich.edu> wrote:
>> The limitation of 7 characters for TSO IDs ...
>> What is the underlying technical reason for the restriction?

>Because jobnames submitted by users are constructed from the userid plus
1 character.

Perhaps, but the most probable reason is in the ADD command in ACCOUNT.

>From 'TSO/E System Programming Command Reference':

ACCOUNT--ADD subcommand
userid - specifies the user ID for a new entry in the UADS and the broadcast   
    data set.

value: 1-7 alphanumeric characters, beginning with an alphabetic or special 
character

HTH!

Groete / Greetings
Elardus Engelbrecht

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