Header

Header defines the metadata of the body.

Schema ID

https://gobl.org/draft-0/head/header

Properties

Title	Property	Type	Description
UUID	uuid	string	Unique UUIDv1 identifier for the envelope.
Digest	dig	dsig.Digest	Digest of the canonical JSON body.
Stamps	stamps	array of head.Stamp	Seals of approval from other organisations that can only be added to non-draft envelopes.
Links	links	array of head.Link	Links provide URLs to other resources that are related to this envelope and unlike stamps can be added even in the draft state.
Tags	tags	array of string	Set of labels that describe but have no influence on the data.
Meta	meta	cbc.Meta	Additional semi-structured information about this envelope.
Notes	notes	string	Any information that may be relevant to other humans about this envelope

Validation Rules

Field	Test	Validation Code / Message
uuid	Present Has timestamp	GOBL-HEAD-HEADER-01 Header must contain a UUID v1 or v7 with timestamp
dig	Present	GOBL-HEAD-HEADER-02 Header must have a digest
stamps	No duplicate stamps	GOBL-HEAD-HEADER-03 Duplicate stamp providers are not allowed
links	No duplicate links	GOBL-HEAD-HEADER-04 Duplicate link keys are not allowed