# FeedbackMessagesHookType (Complex Type)

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

Item Summary
Name | Type | Multiplicity | Description
--- | --- | --- | ---
operationResultHook | property ExpressionType | [0,1] |
stackTraceVisibility | property UserInterfaceElementVisibilityType | [0,1] | Visibility for stack trace in feedback messages of GUI.
showOnlyUserFriendlyMessages | property boolean | [0,1] | If set to true, only user-friendly messages will be shown in the GUI.
disableOperationResultDownload | property boolean | [0,1] | If set to true, the operation result download will be disabled.
displayOnlyTopLevelOperationResult | property boolean | [0,1] | If set to true, only top-level operation result will be displayed.

- ### Items

  - #### operationResultHook

    Flags: RAM,runtime

    Multiplicity: [0,1]

  - #### stackTraceVisibility

    Flags: RAM,runtime,AVals:4

    Multiplicity: [0,1]

    Visibility for stack trace in feedback messages of GUI. Relevant values are 'visible' and 'hidden'. Default value is 'visible'.

  - #### showOnlyUserFriendlyMessages

    Flags: RAM,runtime

    Multiplicity: [0,1]

    If set to true, only user-friendly messages will be shown in the GUI. This is useful for production systems to avoid showing internal error messages. If there's no user-friendly message, the default simple user-friendly message will be used.

  - #### disableOperationResultDownload

    Flags: RAM,runtime

    Multiplicity: [0,1]

    If set to true, the operation result download will be disabled.

  - #### displayOnlyTopLevelOperationResult

    Flags: RAM,runtime

    Multiplicity: [0,1]

    If set to true, only top-level operation result will be displayed.