Oracle Solution for Error ora-19941

ORA-19941: invalid blocksize in cross platform datafile string

What triggered the Error:

Blocksize in header of datafile copy being converted at target was invalid. Either datafile has not been made read/write with compatibility 10.0 or greater at source database or datafile copy is corrupted.

What should we do to fix it:

ke a new datafile copy taken after tablespace has been made read/write with compatibility 10.0 at source database and retry conversion.