Every change of a bill's status: from_status (empty when the bill was written) and to_status, the reasons it gave at…

Every change of a bill’s status: from_status (empty when the bill was written) and to_status, the reasons it gave at the time, who changed it and through what — GENERATED, VALIDATION, PROJECT_CHANGE, NIGHTLY, EXPORT, ERP_SEND (Send to ERP’s check and its sending), SEND, CLOSE, REJECT, WAIVE, RESTORE, CORRECT or DEPLOY.