IS-BAO, this Internationally accepted SMS registration
it may be
Internationally accepted but to whom do you turn to when you have conflict between what is required by the Regs (the Law) and what is required by external Auditors?
If you don't pay the piper, you don't get the work.
An example is the requirement for 2 pilots to crew an AS350 just to move it from one HLS to another HLS when no passengers are on board.