## Hl7AckOptions.errSegment property [​](/content/docs/sdk/core.hl7ackoptions.errsegment#hl7ackoptionserrsegment-property/index.html)

**Signature:**

```typescript
errSegment?: Hl7Segment;
```  
- [Hl7AckOptions.errSegment property](/content/docs/sdk/core.hl7ackoptions.errsegment#hl7ackoptionserrsegment-property/index.html)