# CheckExpressionType (Complex Type)

### Namespace: http://midpoint.evolveum.com/xml/ns/public/common/common-3

Expression used to check the data and report a user-friendly message in case that the check fails.

Item Summary
Name | Type | Multiplicity | Description
--- | --- | --- | ---
expression | property ExpressionType | [0,1] |
localizableFailureMessage | property LocalizableMessageType | [0,1] | Localizable message that will be displayed to user when the expression check fails.
failureMessage | property string | [0,1] |

- ### Items

  - #### expression

    Flags: RAM,runtime

    Multiplicity: [0,1]

  - #### localizableFailureMessage

    Flags: RAM,runtime

    Multiplicity: [0,1]

    Localizable message that will be displayed to user when the expression check fails. This one takes precedence over (non-localizable) failureMessage.

  - #### failureMessage

    Flags: RAM,runtime

    Multiplicity: [0,1]