| 1. Definition | 2. Functional Requirements | 3. Syntax | 4. Semantics |
1 Definition
An Item that a Source Process MM-Sends to a Communication Service requesting it to deliver it to a Destination Process.
2 Functional Requirements
A Message may contain: Item, Data, Data and Qualifier, Data and Metadata.
3 Syntax
https://schemas.mpai.community/MMM4/V2.1/data/Message.json
4 Semantics
| Label | Description |
| Header | Message Header |
| – Standard-Message | The characters “MMM-MSG-V” |
| – Version | Major version – 1 or 2 characters |
| – Dot-separator | The character “.” |
| – Subversion | Minor version – 1 or 2 characters |
| MessageID | Identifier of Message. |
| MessageData | Content of Message |
| MessageDataLength | Number of Bytes in Message Payload |
| MessageDataURI | URI of Message Data |
| DescrMetadata | Descriptive Metadata |
