How to Execute Remote procedures that use DBLinks?

I have created a procedure that I execute remotely by issuing the following:

CALL GLOBAL.REFRESH_STAGING@KRONOSLINK();

The procedure errors as

Error at line 2
ORA-20001: ERROR OCCURED
ORA-06512: at "GLOBAL.REFRESH_STAGING", line 47
ORA-06512: at line 1

The procedure runs without error from the host database.  The problem is when the procedure makes a call to the dblink.
I unsuccessfully attempted to capture the error message.

Question:  Is it possible to execute remote procedures that use dblinks?  If so, How is that accomplished.
Question:  What is the proper way to handle exceptions in this case?

Bonus:   What can be done to improve this procedure? (Suggestions, like adding return on the procedure).