A specific location
The room or area and a reference point that helps you find the issue again.
A visible observation
A description of what was seen during the visit. Access restrictions and uncertainty matter too.
Photographs with context
An overview establishes the location; a closer photograph shows the detail being discussed.
A next step
Record the finding for review. Agree rectification with the responsible party or seek specialist assessment where necessary. A report alone does not guarantee a repair outcome.