It is worth confirming directly that the survey used for the design has captured every relevant obstruction, including sockets, light switches, vents and any structural elements, rather than assuming nothing has been missed. A brief walkthrough of the drawing against the physical wall, ideally with both the architect and supplier present, is one of the most reliable ways to catch a missed detail before production begins. Once panels are already being manufactured, an obstruction missed at the survey stage can mean cutting into a finished panel on site, which rarely produces as clean a result as adjusting the drawing beforehand. This is worth double-checking even when the original survey was carried out carefully, since site conditions occasionally change between survey and production.