AE limits

[Michael Lowry]

Below is a list of Automation Engine limits.

Item	Limit	Allowed characters, etc.	Regular expression
Object name	200 characters	A-Z, 0-9, ., _, -, @, #, $ (See also: Naming conventions)	^[A-Z0-9\$@_\.#\-]{1,200}$
User object name	200 characters	Same as for object name, but with exactly one '/' character separating the user name and the department.	(?=^.{3,200}$)^[A-Z0-9\$@_\.#\-]+\/[A-Z0-9\$@_\.#\-]+$
Task alias	200 characters	Same as for object name. Can be further limited by ALIAS_SPECIAL_CHARACTERS in UC_CLIENT_SETTINGS	^[A-Z0-9\$@_\.#\-]{1,200}$
Object title	255 characters	Any character in the Latin1 character set	^.{0,255}$
Archive key 1	60 characters	Same as for object title	^.{0,60}$
Archive key 2	20 characters	Same as for object title	^.{0,20}$
Int. account	16 characters	Same as for object title	^.{0,16}$
Folder name	255 characters	Same as for object name	^[A-Z0-9\$@_\.#\-]{1,255}$
Script variable name	32 characters	A-Z, a-z, 0-9, _, $, @, @, # First letter must not be a number. Partially case-preserving, but not case-sensitive.	^\&[A- Za-z0-9_@@#][A-Za-z0-9_$@@#]{0,31}$
Object/prompt set variable name	32 characters	A-Z, 0-9, _, $, @, @, # First letter must not be a number. Not case sensitive.	^\&[A- Z0-9_@@#][A-Z0-9_$@@#]{0,31}$
Script variable value	Unlimited	Allowed characters: Same as for object title Length unlimited since v11.1.	^.+$
Object variable value	Unlimited	Allowed characters: Same as for object title Length unlimited since v11.1. Multi-line text permitted since v11.1.	^.+$
Static VARA key	200 characters	Allowed characters: Same as for object title	^.{1,200}$
Static VARA value	Unlimited	Allowed characters: Same as for object title Length unlimited since v11.1. Multi-line text permitted since v11.1.	^.+$
Agent/Agent Group name	32 characters	A-Z, a-z, 0-9, ., _, -	^[A-Z0-9\._\-<>]{1,32}$
Client	4 decimal digits	0-9 (0 is reserved for the system client. 0001-9999 are available for normal clients.)	^[0-9]{4}$
System name	8 characters	A-Z, 0-9, _	^[A-Z0-9_]{1,8}$
Time zone	8 characters
Run ID	2,147,483,647	The Automation Engine stores run IDs internally as 31-bit integers.
Tasks per workflow	Unlimited	Workflows with many tasks may cause high memory consumption & poor UI performance. (See the discussion on AE & AWI sizing.)
: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	1024	Can be increased if necessary by setting MAX_JCL_LINES job attribute.
Rows per static VARA	Unlimited	Limited only by the underlying database.
Rows returned by SQL VARA	500,000 (Default: 200)	Adjust via SQLVAR_MAX_ROWS in UC_SYSTEM_SETTINGS.
Rows returned by BACKEND VARA	500,000 (Default: 200)	Adjust via BACKENDVAR_MAX_ROWS in UC_SYSTEM_SETTINGS.
# of search results returned: objects	20,000 (Default: 5000)	Adjust via GENERIC_SEARCH_LIMIT  in UC_SYSTEM_SETTINGS.
# of search results returned: active tasks	20,000 (Default: 5000)	Adjust via GENERIC_ACTIVITIES_LIMIT  in UC_SYSTEM_SETTINGS.
# of search results displayed in the AWI: active tasks	Unknown (Default: 500)	Adjust via COMBINED_ACTIVITIES_LIMIT  in UC_SYSTEM_SETTINGS. This setting affects the AWI only, not the JUI or Java/REST APIs.
# of search results returned: statistical records	20,000 (Default: 5000)	Adjust via GENERIC_STATISTICS_LIMIT  in UC_SYSTEM_SETTINGS.
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	1,000,000 (Default: 1000)	Adjust via MAX_EXPORT_COUNT  in UC_SYSTEM_SETTINGS.

Sources:

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.

[Marcin_Uracz_8382]

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

[Michael Lowry]

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?

[Michael Lowry]

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

[Anon Anon]

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

[Michael Lowry]

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.

[Michael Lowry]

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.

[Carsten Schmitz]

<emoji>
    sad_emoji
</emoji>

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".

<emoji>
  speechbubble_emoji
</emoji>

Sorry, could not resist.

<emoji>
  wink_emoji
</emoji>

[Michael Lowry]

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

[Michael Lowry]

I added regular expressions for some items, e.g, object name & script variable name.

[Michael Lowry]

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.

[Pete Wirfs]

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.

------------------------------
Pete
------------------------------

[Hans-Juergen Zintl]

Are the limits of 22 Characters for passwords in login objects increased?

[Christian Boeck]

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
Christian
------------------------------