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| BYTE POS. | NUM BYTES | FIELD FORMAT | DATA TYPE | REF NO. | REQ | DESCRIPTION |
| 1 | 1 | A | CH | R | Format Identifier ( A ) | |
| 2 | 1 | X | CH | R | Format Version ( 2 ) | |
| 3-10 | 8 | XX...XX | CH | R | Herd Code | |
| 11-15 | 5 | bbbbb | CH | R | Blank field for sorting | |
| 16-40 | 25 | AA...AA | CH | R | Producer Name | |
| 41-65 | 25 | AA...AA | CH | R | Farm Name | |
| 66-90 | 25 | AA...AA | CH | R | First Line of Address | |
| 91-115 | 25 | AA...AA | CH | R | Second Line of Address | |
| 116-140 | 25 | AA...AA | CH | R | City or Town | |
| 141-142 | 2 | AA | CH | R | State Postal Abbreviation | |
| 143-153 | 11 | XX...XX | CH | R | Zip Code | |
| 154-163 | 10 | XX...XX | CH | R | Telephone Number | |
| 164 | 1 | A | CH | 313 | R | Privacy Code |
| 165 | 1 | A | CH | 338 | R | Records Disclosure Policy |
| 166-167 | 2 | XX | CH | 28 | R | Type of Testing Plan |
| 168 | 1 | X | CH | 107 | R | Testing Method Code |
| 169-174 | 6 | XXXXXX | CH | Date Enrolled (yyyymm) | ||
| 175-176 | 2 | XX | CH | 16 | R | Processing Center Code |
| 177-179 | 3 | XXX | CH | 346 | R | Milk Laboratory Code |
| 180-182 | 3 | XXX | CH | 117 | R | Service Affiliate Number |
| 183-184 | 2 | XX | CH | 5 | R | Local Association Number |
| 185-190 | 6 | XXXXXX | CH | DHI Supervisor or Technician Number | ||
| 191-198 | 8 | XX...XX | CH | R | Last Date Tested (yyyymmdd) | |
| 199 | 1 | X | CH | 13 | R | Species Code |
| 200-201 | 2 | AA | CH | 4 | R | Breed 1 Code |
| 202 | 1 | A | CH | 339 | Breed 1 Association Program Codes | |
| 203-204 | 2 | AA | CH | 4 | R | Breed 2 Code |
| 205 | 1 | A | CH | 339 | Breed 2 Association Program Codes | |
| 206 | 1 | A | CH | 341 | R | Weight reporting code |
| 207-209 | 3 | XXX | CH | Data collection rating | ||
| 210-211 | 2 | XX | CH | Days after breeding for repro check | ||
| 212-213 | 2 | XX | CH | Days cows should stand dry | ||
| 214-215 | 2 | XX | CH | Days to lead feed | ||
| 216-218 | 3 | XXX | CH | Voluntary Waiting Period | ||
| Herd Options for the most recent test | ||||||
| 219-220 | 2 | XX | CH | 103 | Milk Recorded Days | |
| 221 | 1 | A | CH | Herd was milked 3X (Y,N) | ||
| 222 | 1 | X | CH | 108 | Supervision Code | |
| 223 | 1 | X | CH | 127 | Num Milkings -- Milk was weighed | |
| 224 | 1 | X | CH | 127 | Num Milkings -- Samples taken | |
| 225 | 1 | A | CH | 127 | Herd on Fat Testing (Y,N) | |
| 226 | 1 | A | CH | 127 | Herd on Protein Testing (Y,N) | |
| 227 | 1 | A | CH | 127 | Herd on Casein Testing (Y,N) | |
| 228 | 1 | A | CH | 127 | Herd on Lactose Testing (Y,N) | |
| 229 | 1 | A | CH | 127 | Herd on SNF Testing (Y,N) | |
| 230 | 1 | A | CH | 127 | Herd on MUN Testing (Y,N) | |
| 231 | 1 | A | CH | 127 | Herd on SCC Testing (Y,N) |