An edge's source node must exist
The rule
Normative: this is the rule
- An edge whose
sourcedoes not name a node in the workflow is refused withR8_EDGE_SOURCE_MISSINGatedge.{index}, where{index}is the edge's position in the workflow's edge list. - An empty
sourcecounts as missing.
Rule identifiers are permanent and are never renumbered. Each implementation publishes its own standing against these rules; this specification does not.spec 1.0-draft · R8.a · changed in spec 1.0