Update multiple work items - Cloud

Multiple work items can be updated using the Update issues post function in two scenarios:

When you know which work items to update.
When the conditions or JQL provided fetch multiple work items, as mentioned in Use JQL to find issues to update.

Steps

Sign in to your Jira instance as a Jira administrator or a Workflow administrator.
In the top navigation bar, select Settings> Work items.
In the left sidebar of the Work items page, select Workflows.
Select a workflow.
In the Actions column, click ellipses > Edit on your workflow to create a draft version.
In the Transitions (id) column, select a transition.
The selected Transition page is displayed.
Go to the Post Functions tab, click Add post function.
On the Add Post Function To Transition page, Select Update issues (Create on Transition) post function and click Add.
On the Issues Field page, go to the Detailed fields tab.
In the Issues to update field, select the work items you want to update.
Select the other values as required to update the selected work items accordingly.
Click Add.
You are navigated back to the Transition page.
Click Publish draft to publish your workflow.
The selected work items are updated with the fields that you have provided.

When you click Publish draft, you will be prompted to save a backup of the previous workflow, and it is recommended to save a backup of the previous workflow.