Hi @pankaj ,
Thank you for posting query in Microsoft Q&A Platform.
From error message it seems you are trying to update
name
of an existing term, which I is not allowed. You can try to update other details around it but name cannot be update. Hence ending up with this error.
If your requirement is to update name only. Then instead of update API, you need to consider removing that glossary term and creating a new one with your new name.
Hope this helps. Please let me know if any further queries.
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