The BWF Umpire Assessor Panel has produced, and regularly updates, a PDF document called "Umpire & Service Judge Instructions". It is very important for all umpires to be fully aware of the content of this document as it contains information that adds to and enhances the understanding and application of the Laws of Badminton and the Recommendations to Technical Officials.
The most recent version of this document can be found in the Downloads dropdown under Umpires in the Technical Officials section of the BWF Corporate website (bwfcorporate.com/technical-officials/umpires/). We will try and ensure that the most recent version of this document is also available from here: