| Name | RSV_REQ | 
| Description | Donor reservation request | 
The   | 
                            
| Field description (WMDA dictionary field) | EMDIS field code | Required | Field Type | 
|---|---|---|---|
| Sending EMDIS registry (REG_SND) | REG_SND | Optional | N4 | 
| Receiving EMDIS registry (REG_RCV) | REG_RCV | Optional | N4 | 
| Patient identification (Patient Identification) | P_ID | Required | A17 | 
| Donor identification (Donor Identification ( to be replaced by GRID)) | D_ID | Required | A17 | 
| Global registration identifier for donors (GRID) | D_GRID | Optional | A19 | 
| Request date (Request date) | REQ_DATE | Required | D8 | 
| Reference code (REF_CODE) | REF_CODE | Required | A15 | 
| Date expiration of reservation (Reservation Expiry date) | EXPI_DATE | Optional | D8 | 
| Acknowledgement ID (Acknowledgment ID) | ACK_ID | Optional | A17 | 
| Remark (REMARK) | REMARK | Optional | A120 | 
The requested hub has to take care of ”infinite” reservations itself.  |