pub fn validate_support_case(
id: SupportCaseId,
account_id: AccountId,
contact_id: ContactId,
order_id: Option<OrderId>,
status: SupportCaseStatus,
priority: SupportPriority,
opened_at: Timestamp,
last_updated_at: Timestamp,
sla_due_at: Timestamp,
) -> Result<SupportCase, ValidationError>