- System usage: #define AUTH 101
- Application usage: #define APP_AUTH -1101
- Processed by: security manager (_submission)**, BIOS (_foundation)**
Description: Prior to Companion 8.5 or ATOS 12.1: If message is blank: report auth level for given key (SM). If message is full: read auth level for given key (MC, others). (Use key like in dataserver)
After Companion 8.5 or ATOS 12.1: message is always blank; response is sent using 224 USER_RANK_COMMAND.