How to update user-defined version field in Jira?

Robin Li_lb1d8s

Before we use issueBuilder.setFixVersions(jiraBuild.fixVersion) to set Fix Version/s. It works well.

Now, our Jira systems has updated, and new version field Target Version is used instead of Fix Version/s.

If issueBuilder.setFixVersions(jiraBuild.targetVersion) is used,

the error message: RestClientException{statusCode=Optional.of(400), errorCollections=[ErrorCollection{status=400, errors={fixVersions=Field 'fixVersions' cannot be set. It is not on the appropriate screen, or unknown.}, errorMessages=[]}]}

Quetion, which method I should use to update this new version field?

Thanks.

Nic Brough -Adaptavist-

Your target version is now a "custom field", not a system field you can use directly in the standard API.  You need to be treating it as a custom field now.