With regards to construction products and BS EN 1090, a Declaration of Performance DoP (instead of CoC) is required.
A DoP clearly expresses the product performance in relation to the essential characteristics defined in the standard.
However, a Factory Production Control (FPC) certificate is issued by a Notified Body (NB – such as the BBA) after successful assessment of a manufacturer’s compliance with requirements of BS EN 1090.
The FPC certificate is essential and the certificate number must be listed in the DoP.