If in performing a weekly maintenance requires the operator/technician to perform some tasks (e.g. replenish the oil, change the filter, remove accumulated dirt, etc.), and there was no record to show that they were done, then I will need to check whether the oil level is within the acceptable level, check whether the old filter was recently replaced and check whether dirt was removed. An audit trail with the supplies issued to the operator/technician by the material custodian can support the replenishment of oil and filter change. These can serve as verifiable objective evidences for me that the weekly maintenance tasks were done.
well said, 