Translation of error messages (missing value for required fields) is not working in Jira Servicedesk

[PPI Atlassian Administrators]

We have configured with Addon "Translation for JIRA Service Desk" German translations for the required fields "Summary" and "Description" (See MultiLangErrorMessage1.png).
Error messages (missing value for required fields) show field names in English (See MultiLangErrorMessage2.png).

[Angélica Luz]

Hi Gunnar,

I saw that you created a ticket with our support related to the same question and they are already helping, so to avoid any possible misunderstandings or miscommunication that may arise from discussing the same matter in two different platforms, let's focus on the ticket instead.
Once the ticket is resolved, feel free to share the resolution here with us to help other community members that may face the same issue.

Regards,
Angélica