All strings are represented using the UTF-8 encoding. Control characters (ASCII codes 0 - 8 and 11 - 31) are not allowed.

Names consist of up to 40 characters and cannot be empty. Tabs and line breaks are not allowed, trailing spaces are removed. Names are case-sensitive and must be unique.

Issue names and attribute values consist of up to 80 characters. Issue names need not be unique. Attribute values can be empty.

Descriptions consist of up to 80 characters and can be empty.

Identifiers are non-negative integer values.

Stamps are non-negative integer values increasing for every modification of the data.

Dates are integers representing the number of seconds since the Unix Epoch.

Access levels for users and project members are:

The server UUID follows the [RFC 4122] specification.