Sync a table vocabulary source

  • Rversion finale: Australia
  • Mis à jour 12 mars 2026
  • 1 minute de lecture

    • Synchronize your table vocabulary sources to obtain the latest changes to the ServiceNow source table. Synchronizing your vocabulary sources ensures your NLU models have the latest values when predicting intents.

    Avant de commencer

    • Make sure that the NLU Workbench plugin, NLU Workbench - Core plugin, NLU Common Model plugin, and Predictive Intelligence plugin are all installed and activated on your instance.
    • Role required: admin or nlu_admin

    Pourquoi et quand exécuter cette tâche

    When you reference a vocabulary source in an utterance, it pulls the values at the time the model is trained. However, if the table values change over time, the model still references the values from the last training session.

    You can select a schedule to automatically refresh the vocabulary values used by NLU. This schedule can be edited later. For more information, see Create a table vocabulary source.

    You can also manually sync a table vocabulary source, such as before model training.

    Remarque :
    If an utterance references a table vocabulary source that has never been synchronized, the model fails to train. Check the vocabulary source's current status, and sync manually if Never synced.

    In the following example scenario, you're manually syncing the @AccessRoles vocabulary source to the Catalog Item table.

    Procédure

    1. Navigate to All > NLU Workbench > Vocabulary Sources.
    2. In the ServiceNow Tables tab, point just to the right of the Refresh column to invoke the Sync lookup icon.
      ServiceNow Tables tab of the Vocabulary Sources screen. Pointing to the refresh column invokes the sync lookup button.
    3. Select Sync.
      The vocabulary source starts synchronization.

    Que faire ensuite

    The syncing operation can take some time, depending on the source table size.

    Figure 1. ServiceNow Tables tab of the Vocabulary Sources page
    ServiceNow Tables tab of the Vocabulary Sources page. The Current status column shows the progress or condition of the synchronization job.

    The values in the Last refresh and Current status columns reflect the current status of the vocabulary source.

    Figure 2. ServiceNow Tables tab of the Vocabulary Sources page
    ServiceNow Tables tab of the Vocabulary Sources page. The Last refresh and Current status columns provide synchronization information.

    Proceed to train your model. For more information on model training, see Train and try your NLU model.

    For information about errors when syncing a table vocabulary source, see article KB1588239 in the Now Support Knowledge Base.