The type value set "Formar Only" allows bulk insert trought flat file?

Summary:

I have tried to bulk import trought a falt file and the process to import in Manage Value Sets task ends error.

Content (required):

The process import ends in error, message error "File download failed", I share a SS and the question is, the type value set "Formar Only" allows bulk insert trought flat file? I share the DFF details.

Error:

DFF:

Version (include the version you are using, if applicable):

23C (11.13.23.07.0)

Code Snippet (add any code snippets that support your topic, if applicable):