Last Name not known

Last Name not known

I am in the process of transferring my contacts in to Zoho CRM.  Half of my contacts do not have a known 'Last Name' or I only know their job title and no name.
 
How do I import these, given that 'Last Name' is a required field?
 
I have thought about putting in an arbitrary character, but this would cause problems when using the data for mailings, etc.

Moderation update (10-Jun-23): We don't have any official updates to share at this point of time. The team is checking on the possibilities of handling this requirement. There is another active thread to discuss on this request, where we had posted the challenges involved, and the possible work-arounds. We're locking this post to avoid redundancy.  Do follow this post for further updates.