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# Job variable changes in child workflows

> Breaking change notice that Itential Platform 2023.2 now validates job variable consistency between parent and child workflows, preventing mismatches from being saved or run.

## Breaking change notice

This breaking change applies to parent and child workflows in the 2023.2 Itential Platform release.

## Job variable validation check

When adding a new input job variable or modifying the name of an existing job variable in a child workflow, the `childJob` task in the parent workflow must be updated to reflect those changes. Previously, if this update was missed, the `childJob` would not start but no warning was displayed.

In 2023.2, Itential has implemented a validation check that stops the parent workflow from running and prevents it from being saved when a job variable mismatch exists. A caution message alerts you to the mismatch.

## What should I do?

When modifying a job variable in a child workflow, always update the corresponding `childJob` task in the parent workflow. If you still experience issues or need additional assistance, contact the [Product Support Team](https://itential.atlassian.net/servicedesk/customer/portals).