| 1 | Unrecognized segment ID |
| 2 | Unexpected segment |
| 3 | Required Segment Missing |
| 4 | Loop Occurs Over Maximum Times |
| 5 | Segment Exceeds Maximum Use |
| 6 | Segment Not in Defined Transaction Set |
| 7 | Segment Not in Proper Sequence |
| 8 | Segment Has Data Element Errors |
| 10 | Segment Has Excess Trailing Delimiters |
| I4 | Implementation "Not Used" Segment Present |
| I6 | Implementation Dependent Segment Missing |
| I7 | Implementation Loop Occurs Under Minimum Times |
| I8 | Implementation Segment Below Minimum Use |
| I9 | Implementation Dependent "Not Used" Segment Present |