The time when the tendering questions is issued. The issue time must have granularity of seconds, and include time zone information.

Namespace
cbc urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2
Data type
Time
Rules
Identifier/Error message Flag
PEPPOL-T007-R016
IssueTime MUST include timezone information.
fatal
PEPPOL-T007-R017
IssueTime MUST have a granularity of seconds
fatal