You can update a glossary file's content that you have previously uploaded. This request will also update the name of the glossary as you provide.
See "Supported formats" section to get a list of supported formats for documents, style guides and glossaries.
You can only add/update/delete glossaries before you launch the project.
Uploading glossaries as form data
Check Upload a glossary section to learn more about how to upload glossary files directly as a form data.