| Length | From | To | Datatype | Format | Description and Comments |
|---|---|---|---|---|---|
| 1 | 1 | 1 | AN | X | Record ID - "1" |
| 2 | 2 | 3 | AN | X(2) | Exchange Code |
| 6 | 4 | 9 | N | 9(6) | Business Date as YYMMDD |
| 2 | 10 | 11 | AN | X(2) | File Identifier |
| 6 | 12 | 17 | N | 9(6) | File Creation Date as YYMMDD |
| 4 | 18 | 21 | N | 9(4) | File Creation Time as HHMM |
| 1 | 22 | 22 | AN | X | File Format - U for Unpacked or P for Packed |
| 1 | 23 | 23 | - | - | Filler |
| 1 | 24 | 24 | AN | X | Clearing or Customer Code - A for Clearing, or blank or C for Customer |
| 1 | 25 | 25 | - | - | Filler |
| 5 | 26 | 30 | AN | X(5) | Clearing or Customer Acronym - blank or CUST for Customer, or CLR for Clearing |
| 1 | 31 | 31 | - | - | Filler |
| 1 | 32 | 32 | AN | X | Account Type Code. For Clearing accounts, blank or N for Normal, or M for Member. For Customer accounts, blank or H for Hedger, M for Member, S for Speculator. |
| 1 | 33 | 33 | - | - | Filler |
| 5 | 34 | 38 | AN | X(5) | Account Type Acronym. For Clearing accounts, blank or NRML for Normal, or MBR for Member. For Customer accounts, blank or HEDGE for Hedger, MBR for Member, SPEC for Speculator. |
| 1 | 39 | 39 | - | - | Filler |
| 1 | 40 | 40 | AN | X | Performance Bond Class Code - blank or 1 for Core, or 2 for Reserve |
| 1 | 41 | 41 | - | - | Filler |
| 5 | 42 | 46 | AN | X(5) | Performance Bond Class Acronym - blank or CORE for Core, or RESRV for Reserve |
| 1 | 47 | 47 | - | - | Filler |
| 1 | 48 | 48 | AN | X | Maintenance or Initial Code - blank or M for Maintenance, or I for Initial |
| 1 | 49 | 49 | - | - | Filler |
| 5 | 50 | 54 | AN | X(5) | Maintenance or Initial Acronym - blank or MAINT for Maintenance, or INIT for Initial |
| 26 | 55 | 80 | - | - | Filler |
Notes: