# User Fields

User fields are only provided if you select the appropriate Reply Method on the Recipe or Trigger Definition panel. When in use, the fields are in the user message and the Substation ES error message `tibss-error-msg`.

If the `EMS-USE-PROP` flag in the ESB SIP member is enabled, the fields are included as property fields of the user message. User fields are only provided by the Substation ES on output.

For more details, see Application Notifications.

Copyright © TIBCO Software Inc. All rights reserved.