Message Oracle RMAN-06139 - WARNING: control file is not current for REPORT SCHEMA

ERRORWARNING: control file is not current for REPORT SCHEMA
CAUSEA REPORT SCHEMA with no at_clause was issued, and there is no recovery catalog, and the control file mounted by the target instance is not current, so the information about the current list of datafiles may not be current.
ACTIONUse a recovery catalog or mount a current control file.