Flow : DLC ------> NODE
| Field | Type | Description | 
|---|---|---|
| nxtqptr | PTRBFHDR | Pointer to next buffer header in a queue | 
| hdreptr | PTRBFELT | Pointer to first buffer element: NULL | 
| numelts | CHAR | Number of buffer elements: 0 | 
| msgtype | CHAR | Message type: CLOSEMSG (0x02) | 
| srcl | CHAR | Source locality | 
| srcp | CHAR | Source partner | 
| srci | INTEGER | Source index | 
| destl | CHAR | Destination locality | 
| destp | CHAR | Destination partner | 
| desti | INTEGER | Destination index | 
| clhdr.closqual | CHAR | Close qualifier - RSPOK (0x02) - RSPERR (0x03) | 
| clhdr.clstype | CHAR | Close type: LINK (0x10) | 
| clhdr.clserr1 | INTEGER | Error code (see below) | 
The error codes (for an ERROR-RESPONSE) are defined as:
| 0x03 | Link not open | 
| 0x04 | Invalid link index |