#### ITK Business Acknowledgement
Domain Message Specification

### Change History

#### Version: 1.1; Status: Final

- Specification
  - The Pack has been rebranded to HSCIC.
- ITK Implementation Page
  - Corrected Web Service Wrapper.

#### Version: 1.0; Status: Final

- Model
  - Model class BusinessResponseMessage (XML element BusinessResponseMessage) used a data type flavour that didn't allow a nullFlavor for model attribute interactionId (XML element interactionId). Changed data type flavour to II.NPfIT.oid.required. This relaxing of the data type is backwardly compatible.
  - Model class ManifestItem (XML element conveyingTransmission). Changed data type from II.NHS.IdentifierType2 to II.NHS.GenericType1 The previous data type was constrained to format of a DCE UUID. Payload identifiers can be in any format allowed by ID and IDREF. The new data type allows any string as a payload identifier. This change is backwardly compatible.

#### Version: 1.0; Status: RC2

- ITK Implementation Page
  - Updated link to distribution envelope schema.
- Glossary
  - Updated to most recent.

#### Version: 1.0; Status: RC1

- Specification
  - First ITK Business Acknowledgement.