Automic Workload Automation

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AE limits

  • 1.  AE limits

    Posted 02-01-2018 08:49 AM
    Edited by Michael A. Lowry 03-03-2021 05:17 AM

    Below is a list of Automation Engine limits.



    Allowed characters, etc.

    Regular Expression

    Object name

    200 characters

    A-Z, 0-9, ., _, -, @, #, $

    (See also: Naming conventions)


    User object name

    200 characters

    Same as for object name, but with exactly one '/' character separating the user name and the department.


    Task alias

    200 characters

    Same as for object name. Can be further limited by ALIAS_SPECIAL_CHARACTERS in UC_CLIENT_SETTINGS


    Object title

    255 characters

    Any character in the Latin1 character set


    Archive key 1

    60 characters

    Same as for object title


    Archive key 2

    20 characters

    Same as for object title


    Int. account

    16 characters

    Same as for object title


    Folder name

    255 characters

    Same as for object name


    Script variable name

    32 characters

    A-Z, a-z, 0-9, _, $, @, §, #
     First character must not be a number or a $ symbol. Partially case-preserving, but not case-sensitive.


    Object/prompt set variable name

    32 characters

    A-Z, 0-9, _, $, @, §, #
     First letter must not be a number. Not case sensitive.


    Script variable value


    Allowed characters: Same as for object title
    Length unlimited since v11.1


    Object variable value


    Allowed characters: Same as for object title
    Length unlimited since v11.1Multi-line text permitted since v11.1.


    Static VARA key

    200 characters

    Allowed characters: Same as for object title


    Static VARA value


    Allowed characters: Same as for object title
    Length unlimited since v11.1Multi-line text permitted since v11.1.


    Agent/Agent Group name

    32 characters

    A-Z, a-z, 0-9, ., _, -



    4 decimal digits

    0-9 (0 is reserved for the system client. 0001-9999 are available for normal clients.)


    System name

    8 characters

    A-Z, 0-9, _


    Time zone

    8 characters


    Service Manager destination/phrase

    16 characters

    A-Z, a-z, 0-9, _, -

    The SMgr actually supports destination names up to 31 characters, but the Automation Engine and AWI have problems with names longer than 16 characters.


    Run ID


    The Automation Engine stores run IDs internally as 31-bit integers.

    Tasks per workflow


    Workflows with many tasks may cause high memory consumption & poor UI performance. (See the discussion on AE & AWI sizing.)

    Levels of nested workflows


    Was 16 prior to version 10.

    Levels of nested JOBIs


    See Includes (JOBI).

    Levels of task recursion

    (Default: 16)


    :PRINT line

    1024 characters

    Lines longer than 1024 characters are truncated at 1021 characters, and the last three characters are replaced with '...'.

    Script lines per scripting tab

    32,767 (2¹⁶-1)

    See Process Pages in the AE documentation.

    Generated JCL lines


    Can be increased if necessary by setting MAX_JCL_LINES job attribute.

    Rows per static VARA


    Limited only by the underlying database.

    Characters in SQL VARA


    Applies to SQL, SQL, SEC_SQL, and SEC_SQLI VARA objects.

    Rows returned by SQL VARA

     (Default: 200)


    Rows returned by BACKEND VARA

     (Default: 200)


    # of search results returned: objects


    (Default: 5000)


    # of search results returned: active tasks


    (Default: 5000)


    # of search results displayed in the AWI: active tasks


    (Default: 500)


    This setting affects the AWI only, not the JUI or Java/REST APIs.

    # of search results returned: statistical records


    (Default: 5000)


    XML export/import: file size

    30 MB

    Can be further limited using MAX_IMPORT_SIZE system setting. Exporting/importing very large XML files may cause high memory consumption & poor UI performance. (See the discussion on AE & AWI sizing.)

    XML export: # of objects


    (Default: 1000)


    The regular expressions included here can be used to programmatically validate adherence to the corresponding limits.


    1. Naming conventions
    2. Common job attributes
    3. Static VARA
    4. ucsrv.ini

    Please comment below if you know of an AE limit you’d like to contribute to the list.

  • 2.  AE limits

    Posted 02-01-2018 09:00 AM
    Maybe it would make sense to put also some additional findings here on a separate list?

    Like for instance the current limit on print to 1023 characters - Print maximum number of data in a variable

  • 3.  AE limits

    Posted 02-01-2018 10:12 AM

    Many documentation pages mention that a field may contain any characters of the data type string. The documentation on Script variables lists the data types:

    • unsigned - positive integers
    • signed - negative and positive integers
    • float - positive and negative floating-point numbers*
    • string - string, the value must be enclosed in inverted commas (script literal)

    * Internally, the Automation Engine treats float values as IEEE754 doubles, for more precise floating point arithmetic.

    I could find no description of the characters that are permitted in the string data type. Is this documented anywhere? Does it depend on the language environment or OS?

  • 4.  AE limits

    Posted 03-13-2018 08:45 AM

    PRB00221501 has been opened to clarify which characters are allowed in the string data type.

  • 5.  AE limits

    Posted 03-13-2018 08:53 AM
    Hi Michael_Lowry

    another limitation to TASK Alises - they are only allowed in uppercase letters.
    This was a especially bad finding if you want to use VARA keys as Task ALIAS names.....

    Limit for static VARA objects regarding amount of lines: NONE
    the limit is the  DB Performance

    cheers, Wolfgang

  • 6.  AE limits

    Posted 03-15-2018 09:15 AM
    Automic updated the problem ticket to clarify that the string data type allows any character of the Latin1 character set:
    String of any length, all characters that correspond to the Latin1 codepage can be used.
    Be careful when you copy & paste contents from browsers or other tools. They might use a different type of encoding that does not work.
    I have updated the table above. Automic will update the documentation soon.

  • 7.  RE: AE limits

    Posted 10-16-2019 12:21 PM
    Edited by Michael A. Lowry 03-03-2021 04:50 AM
    In a recent roadmap talk, product management indicated that UTF-8 support is planned for some fields.

    I guess we won't be able to use emoji in object names.

  • 8.  RE: AE limits

    Posted 10-17-2019 04:55 AM

    Last I heard someone talked about "full support" for UTF-8 but that's why we (possibly) can't have nice things. Or, maybe it's just the alternative variant of "full". As in: for very small values of "full".


    Sorry, could not resist.


  • 9.  Re: AE limits

    Posted 08-10-2018 10:05 AM

    I added a bunch more limits, including many of the ones set in UC_SYSTEM_SETTINGS.

  • 10.  RE: AE limits

    Posted 09-17-2019 03:00 AM
    I added regular expressions for some items, e.g, object name & script variable name.

  • 11.  RE: AE limits

    Posted 10-03-2019 03:07 AM
    Please note that due to a bug in the forum platform (Higher Logic), in the above table (as in all other discussion threads), the chapter symbol is not displayed correctly.

    The chapter symbol should look like this:
    Instead, it appears as an at symbol (@). Because of this bug, in a couple of the regular expressions above, two at symbols appear instead of an at symbol followed by a chapter symbol.

  • 12.  RE: AE limits

    Posted 10-03-2019 11:52 AM
    Another AE limit;

    If you have a SQL statement that exceeds 4,000 characters of statement code, you will not be able to store and run it in a VARA.SQL or VARA.SQLI object.


  • 13.  RE: AE limits

    Posted 07-20-2020 10:41 AM
    Does this limit still exist? Is it documented anywhere?

  • 14.  RE: AE limits

    Posted 07-20-2020 10:54 AM
    Edited by Pete Wirfs 07-20-2020 10:56 AM
    I just confirmed it still exists in 12.3.  The AWI throws an error message of "the maximum length is 4096 characters".  And the documentation also states "Maximum length: 4096 characters".

    As someone who has written a lot of complex SQL, I find this restriction unpleasant.

    Pete Wirfs
    SAIF Corporation
    Salem Oregon USA

  • 15.  RE: AE limits

    Posted 07-20-2020 11:12 AM
    Ok, thanks. I've added it to the list.

  • 16.  RE: AE limits

    Posted 10-10-2019 08:13 AM
    Are the limits of 22 Characters for passwords in login objects increased?

  • 17.  RE: AE limits

    Posted 10-10-2019 12:01 PM
    Hi Hans-Juergen,
    since 12.1 the password length for a Login Object is set to unlimited and all characters are allowed (including commas)

    Thx & rgds

  • 18.  RE: AE limits

    Posted 02-25-2021 10:31 AM
    I added an entry for the Service Manager destination/phrase, based on findings reported in another thread.

  • 19.  RE: AE limits

    Posted 03-03-2021 02:30 AM
    Hi @Michael A. Lowry

    Thanks for all your efforts, your contributions are most appreciated!
    3 more limits:
    • nested JOBI's =>  5 (
    • nested Workflows => unlimited (including V10 - I believe - it was 16)
    • also check => MAX_NESTING_DEPTH


    Automic AE Consultant and Trainer since 2000

  • 20.  RE: AE limits

    Posted 03-03-2021 04:48 AM
    Edited by Michael A. Lowry 03-03-2021 05:18 AM
    @Christoph Rekers I added these items to the list. Thanks!

  • 21.  RE: AE limits

    Posted 03-03-2021 05:24 AM
    Edited by Michael A. Lowry 03-03-2021 05:36 AM
    I restored the regular expressions column. Somehow it got removed during a previous round of editing.

    Because Higher Logic lacks a proper table editor, I have to use a cumbersome and error-prone method when editing this post:
    1. Copy the existing table.
    2. Paste it into MS Word, or another more capable web-based rich text editor like the one in Jive.
    3. Edit the table and copy it.
    4. Paste it back into the Higher Logic editor.
    5. Fix all of the formatting that became corrupted along the way.
    6. Save the edits.

    Someday I might tire of this.

  • 22.  RE: AE limits

    Posted 03-05-2021 05:39 AM
    Edited by Michael A. Lowry 03-05-2021 05:40 AM
    @Elina McCafferty: perhaps you'd like to add a list like this to the documentation.

  • 23.  RE: AE limits

    Posted 03-22-2021 06:55 PM
    I don't know whether you considered this, but I guess there is an actual limit as for the length of the object variable. While playing with really big promptest inputs I reached:

    U00020821 Runtime error in object 'JOBS.SQL.NEW.1', line '00000': Value of paramter '1' too long. Allowed length is '1048576' because of system setting MAX_VARIABLE_SIZE
    This limit was discussed also couple of years ago


  • 24.  RE: AE limits

    Posted 07-22-2021 11:59 AM
    There is no limit on the number of client objects or folders, correct?
    I shall log in Ideation item.
    I'd like to limit the overall number of objects developers deploy to test environments, as they never delete them otherwise.