title: GroupHeader120
description: >
  Set of characteristics shared by all individual transactions included in the
  message.
type: object
additionalProperties: false
properties:
  MsgId:
    allOf:
      - $ref: ./Max35Text.yaml
      - description: >
          MessageIdentification

          Definition: Point to point reference, as assigned by the instructing party, and sent to the next party in the
          chain to unambiguously identify the message.

          Usage: The instructing party has to make sure that MessageIdentification is unique per instructed party
          for a pre-agreed period.
  CreDtTm:
    allOf:
      - $ref: ./ISODateTime.yaml
      - description: >
          CreationDateTime

          Date and time at which the message was created.
required:
  - MsgId
  - CreDtTm
example:
  MsgId: 12345
  CreDtTm: '2020-01-01T00:00:00Z'