CORE_ATTACHMENT_ZIP CORE Endpoint
  /rpc/core/?method=CORE_ATTACHMENT_ZIP  
  Create a new attachment against an object that is a zip of all other attachments.  Only works for attachments held locally (e.g. excludes attachments on Amazon S3)  
  PARAMETERS TYPE NOTES
  FileName Text Defaults to attachments.zip
  Object Numeric Mandatory
  ObjectContext Numeric Mandatory
  Type Numeric As per SETUP_ATTACHMENT_TYPE_SEARCH
  RETURN  
  attachment Ids of created attachment
  attachmentlink  
  COPIED