Guides
NWR / REV — work registration
The heart of CWR: one NWR (new work) or REV (revised work) line opens each registration, carrying the title, your submitter work number, the ISWC if one exists, and distribution category. ISW and EXC share the same layout for ISWC notifications and works in conflict.
The exact field layout — positions, sizes, and formats — is defined in CISAC's CWR specification (CWR19-1070R1), available to CISAC members and licensees. The validator implements the full layout: drop a file on it and every NWR / REV / ISW / EXC line is parsed field by field, with problems tied to the exact characters at fault.
Two free checks for your CWR file. Is the file correct? Every record, share and control total against the spec, each problem on its exact line. Do its writers match their registrations? Every writer cross-checked against public registration data, including works registered under another spelling or IPI. Nothing stored: check a file at cwrcheck.com.