Absolutely right. The label is there for identification purposes only, for ............
1) The auditors, who will give the engineer a 'defect' should he find faulty or defective issues during his audit.
2) The engineers, so they will know not to waste time ringing the A1024 duty to re-report the same issue.
The labels are waterproof, but of course over time they can fade with weather conditions. The labels should actually be pinned to the poles with the writing facing the pole, for this reason. Also, they can get damaged and torn .......... so sometimes a call to the A1024 duty is needed for clarification.