A technique to place a completion assembly in a well while maintaining the well in an underbalanced condition includes running a plug on a deployment tool to a desired depth in the well. The very smooth surface A is suitable in particular for coating with materials, for example SiOx, by means of plasma polymerization of hexamethyldisiloxane by the CVD or PECVD method, which provides the film with a high oxygen barrier and is suitable in particular as packaging for light- and air-sensitive foods or other consumable items. In case that two or more message parts are generated, each preceding message part comprises a continuation indicator indicating a succeeding message part. In one embodiment, a multiple etch stop insulation layer comprising multiple etch stop layers is deposited. The proximal ends of the primary radiation conductors are fixed in the holes of the fixed disc and distal ends of the secondary radiation conductors are fixed in the holes of the turnable disc, whereby the primary and the secondary radiation conductors by rotation of the turnable disc are connectable to each other in different constellations. A surround is coupled to the outer perimeter and the frame to support the outer perimeter from the frame.