Can't import public key

[Robert J. Hansen]

> We are using GnuPG 1.2.1 on AIX.

Please don't.  GnuPG 1.2.1 dates back to *October 2002*.  It's fifteen
years old and was EOLed ages ago.  There are many known problems with
it.  Please upgrade.

> Will there be any problem importing the public key. While importing we
> are getting below error -

You'll find few people here will be able to help you, I'm afraid.  :(