Hi Nandy Bo,
Thank you for posting query in Microsoft Q&A Platform.
This error typically occurs when there are ongoing operations or changes happening within the namespace, and Azure is unable to complete the deletion process.
Kindly try below and see if that helps.
- Look for any ongoing operations or changes that might be in progress, such as creating or updating Event Hubs, consumer groups, or other resources within the namespace. If there are any ongoing operations, wait for them to complete.
- Review Activity Logs and see if any ongoing process causing this issue.
Make sure no operations going on and then try delete again and see if that helps.