err-codes.com

Cause: Element or attribute name is
namespace qualified.
Action: Remove prefix or default
namespace URI declaration from itself or ancestors.

Cause: Element or attribute name is not
namespace qualified.
Action: Add prefix or default namespace
URI declaration.

Cause: ref or name attributes are
either both missing or have both been specified.
Action: Specify either ref, name,
but not both.

Cause: The field element evaluated to a
node-set with a member that was not a simple type.
Action: Change the field element`s
type.

Cause: XPath expressions relative to
each element selected by a {selector}are specified by {fields}. These XPath
expressions must identify a single node (element or attribute) whose content
or value was used in the constraint. This content or value must be of a simple
type.
Action: Remove duplicate elements or
attributes.

Cause: The required fields were missing
from the content of the element.
Action: Add the
fields.

Cause: Data has a value greater than
maximum.
Action: Decrease the
value.

Cause: Data has a value less than
required minimum.
Action: Increase the
value.

Cause: The value of the data is not one
of the enumeration choice.
Action: Select one of the enumeration
choice as its value.

Cause: The key value was not unique
within its scope.
Action: Change the key
value.