What does Error code 154215103 indicate in eMAM Premiere panel?

What does Error code 154215103 indicate in eMAM Premiere panel?

Error code 154215103: This message appears when you try to import the archived assets. This error will not occur if you choose to “Link assets to the mezzanine" version:  if a mezzanine version is available in current storage, then it will be imported.  
  • Restore the archived assets and import again.