database link issue ORA-06550; PLS-00201

Dear all,

Im facing following error while executing procedure via database link from database version 12.1 to 12.2.

end;

Error report -

ORA-06550: line 24, column 4:

PLS-00352: Unable to access another database 'LBTCI'

ORA-06550: line 24, column 4:

PLS-00201: identifier 'LB@LBTCI' must be declared

ORA-06550: line 24, column 4:

PL/SQL: Statement ignored

06550. 00000 -  "line %s, column %s:\n%s"

*Cause:    Usually a PL/SQL compilation error.

*Action:

link user has a dba permission on target database... so advises regarding lack of permissions don't work.

If I execute the same procedure from 12.2 via link on 12.2 it works.

the issue comes only when source database version differs from  target.