Breakdown of Таможенная пошлина указана в документе.
Questions & Answers about Таможенная пошлина указана в документе.
Because it agrees with пошлина, which is a feminine singular nominative noun.
- пошлина = a feminine noun
- таможенный = the dictionary form of the adjective, meaning customs
- feminine singular nominative form = таможенная
So таможенная пошлина means customs duty, with the adjective matching the noun in gender, number, and case.
Because it is the subject of the sentence.
In Таможенная пошлина указана в документе, the thing being talked about is the customs duty. That is why таможенная пошлина is in the nominative.
A rough grammatical breakdown is:
- Таможенная пошлина = subject
- указана = predicate
- в документе = location / where it is indicated
Указана is the short-form passive participle of указать.
In this sentence, it means something like:
- is indicated
- is stated
- is specified
- is listed
So the whole sentence has a passive meaning: the customs duty is indicated in the document.
This is a very common Russian pattern in formal or written language.