suivant cadre de classement ou nomenclature
=
in accordance with the framework of classification / filing or schedule

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Note added at 50 mins (2010-04-14 10:47:38 GMT)
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Enregistrement des inventaires par unité d’archivage suivant cadre de classement ou nomenclature
=
Recording of inventories by unit of filing in accordance with the framework of classification or schedule



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Note added at 1 hr (2010-04-14 11:23:20 GMT)
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IMHO in this specific instance:

classement = classification
nomenclature = schedule

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Note added at 3 hrs (2010-04-14 13:21:24 GMT)
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Note to Asker:

I see that Mr. Grayson has disagreed with my answer (as is very often the case). However, please note that he has proposed absolutely no suggestions whatsoever himself. I thought that you should be made aware of this fact.

my understanding of the sentence.

Although this is in the field of Transport/Transportation/Shipping, the context is about archiving inventories, and these inventories will be recorded according to a classification system or nomenclature.

cadre de classement = classification system

"The ABC classification system is to grouping items according to annual sales volume, in an attempt to identify the small number of items that will account for most of the sales volume and that are the most important ones to control for effective inventory management".
http://home.ubalt.edu/ntsbarsh/business-stat/otherapplets/in...