| Field code | D_GRID | 
| Field description | Global registration identifier for donors | 
| Field type | Alphanumeric Length: 19 | 
| Field rule | Nineteen character identifier. The GRID is composed of three elements: a four digit ION; a thirteen character Registration Donor Identifier (RDI) assigned by the Issuing Organization; and a two digit checksum. Further details can be found on: https://collaboration.wmda.info/display/GRID  | 
                        
| Dictionary field | GRID (Global registration identification for donors) | 
| EMDIS messages | 
                                
                                    ALM_RES DONOR_CB IDM_REQ IDM_RES MARR_STAT MSG_DEN NO_RES REQ_CAN RES_REM RSV_REQ RSV_RES SMP_ARR SMP_INFO SMP_REQ TXT_MSG TYP_REQ TYP_RES WARNING WOR_REQ  | 
                        
| WMDA XML fields related to dictionary field | 
                                
                                    GRID |