При

Here the word pri should be translated as: During ?:
При идентификации денежных эквивалентов могут применяться различные классификации,

We have the same word in Czech -> Při.

Yes, it means "during" or "when doing something" like -> I always listen to the radio when working x)

However there is far more words expressing this word (at least in English).

During, or in the process of - that's the meaning.