Parameter naming constraints

When specifying labels for datasets, configurations, schedules or groups, there are a few constraints which must be respected:

Maximum length of 31 characters.
Must not start with a full stop/period character (.).
Must not match any command name, critical parameter keywords, or existing labels; in this context a match is not case sensitive. A complete list of reserved words can be found in the appendix.
Labels are case sensitive; 'a' is not the same as 'A'.
It is good practice to use only alphabetic characters, numeric digits, and the underscore '_' character. This will avoid problems in future if any other punctuation character is assigned a special purpose.

Special characters which can not be used:

Extended ASCII characters (code 128+)

' ' (space)

'!' (exclamation mark)

'“' (double quote)

'#' (number sign)

'$' (dollar)

'&' (ampersand)

''' (single quote)

‘()' (parentheses)

'*' (asterisk)

',' (comma)

'/' (forward slash)

';' (semicolon)

'<' (less than)

'='(equals)

'>' (greater than)

'?' (question mark)

'@' (at sign)

'[]' (square brackets)

'\' (backslash)

'^' (caret)

'`' (grave)

'{}' (curly brackets)

'|' (pipe)

'~' (tilde)

'%' (percent)