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# Publishing workflow models

## About workflow publications

Once a workflow model is defined, it must be published in order to enable authorized users to launch associated data workflows.

Two services are available in order to publish :

- With the button Publish in the navigation pane: this service allows to publish only the model currently edited.

- Through the button Mass publish that can be found in the toolbar on the same level of the section title Workflow models : this service allows many models to be published at once. The first step allows to select many models to publish: only models not containing sub-workflows invocation will appear in this step. Indeed, a workflow having sub-workflows doesn't qualify for mass publish.

Workflow models can be published several times. A publication is identified by its publication name

## Publishing and workflow model snapshots

When publishing a workflow model, a snapshot is taken of its current state. A label and a description can be specified for the snapshot to be created. The default snapshot label is the date and time of the publication. The default description indicates the user who published the workflow model.

For each workflow model being published, the specified publication name must be unique. If a workflow model has already been published, it is possible to update an existing publication by reusing the same publication name. The names of existing workflow publications associated with a given workflow model are available in a drop-down menu. In the case of a publication update, the old version is no longer available for launching data workflows, however it will be used to terminate existing workflows. The content of different versions can be viewed in the workflow model snapshot history.

##### See also

- Workflow model snapshots

## Sub-workflows in publications

When publishing a workflow model containing sub-workflow invocation steps, it is not necessary to separately publish the models of the sub-workflows. From an administration standpoint, the model of the main workflow (the one currently published by a user) and the models of the sub-workflows are published as a single entity.

The system computes the dependencies to workflow models used as sub-workflows, and automatically creates one publication for each dependent model. These technical publications are dedicated to the workflow engine to launch sub-workflows, and are not available in the Workflow Data area.

The multiple publication is not available for a workflow model containing sub-workflow invocation steps. This is why the first step of the publication (selection of workflow models to publish) is not offered in this case.

Republishing the main workflow model automatically updates the invoked sub-workflow models.

Although a sub-workflow model can be published separately as a main workflow model, this will not update the version used by an already published main workflow model using this sub-workflow.

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Documentation > User Guide > Workflow models