I think as Jim has pointed out, this would be for a specific customer and would not apply to any other customer. A specific customer may not see a need for any accounting, for what ever reason. Because of this, we can not, from what we know in this thread at this point, know why a customer would waive tracking / accounting for their property, so it's really not relevant. If a customer waives that requirement, it is their prerogative. It may be unusual, bit apparently is does happen.
This does not relieve the company from complying with the standard for any customer who has not waived the requirement.
As to an element of the standard that allows a waver, there isn't anything in the standard which says a customer can *not* waiver the requirement.