The device history record (dhr) was not possible since the lot number provided from customer was not a valid lot number.A sample analysis was not possible as there was no photographs or samples provided for evaluation.Without a sample we are unable to perform a thorough follow up investigation to include functional and visual evaluation to determine the root cause(s) of the reported condition or implement any corrective action(s).If a sample should be returned, this complaint will be reopened, and the investigation updated to reflect our findings.Since this complaint will be considered unconfirmed, no corrective or preventive actions will be taken at this time.
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