The named server failed to successfully parse and load a zone because of a problem with a resource record or set of resource records.

file_name is the name of the master zone file being processed at the time of the error.

line_number is the line number of the master zone file where the error was encountered.

dns_name is the owner name of the resource record in error.

error_text gives more information about the error.

If error_text is CNAME and other data, then the master zone file contains a CNAME and at least one other resource record with the same owner name as the CNAME resource record, which is not allowed.