I don't see any information about the specific breaking change mentioned in your link in the provided knowledge sources. The URL you shared (`https://www.ory.sh/docs/troubleshooting/account-linking-response-code`) is not present in any of the documents I have access to. However, based on the knowledge sources, I can provide some general guidance on testing for breaking changes in Ory: 1. Review the [CHANGELOG.md](https://github.com/ory/kratos/blob/master/CHANGELOG.md) for the specific Ory product you're using to understand the breaking change details. 2. For account linking issues, you could test by following a flow similar to what's described in [this issue](https://github.com/ory/network/issues/400), where users experienced problems with account linking when using different authentication methods. 3. You might want to test specifically with the code linking strategy, as mentioned in one of the comments in the knowledge sources. To get more specific guidance on testing for the particular breaking change you're referring to, I would need more information about the specific change mentioned in that troubleshooting document. I recommend checking the Ory documentation directly or joining the [Ory Community Slack](https://slack.ory.sh/) for more targeted assistance.