4.2 Abbreviations
| AVS | Allowed Value Set | 
| DDEX | Digital Data Exchange, LLC | 
| ISO | International Organisation for Standardisation (see https://www.iso.org) | 
| RDR | Recording Data and Rights | 
| RDR-C | Recording Data and Rights – Part 1: Communication Protocol RDR-N Recording Data and Rights – Part 2: Notification | 
| RDR-R | Recording Data and Rights – Part 3: Revenue Reporting | 
| RDR-RCC | Recording Data and Rights – Part 4: Rights Claim Conflict SFTP Secure File Transfer Protocol | 
| TSV | Tab-Separated Values | 
| URL | Uniform Resource Locator | 
| XML | eXtensible Markup Language | 
| XSD | XML Schema Definition | 
| W3C | World Wide Web Consortium (see http://w3c.org ) WS Web Service |