This is the 4388th most frequent Russian word.
ввоза
"Ввоза" means "import" or "bringing in" (genitive case of "ввоз").
In this sentence, 'ввоза' is used in the genitive case to specify the type of restriction being discussed - pertaining to imports.
Ограничение ввоза фруктов из-за границы было введено.
The restriction on the import of fruits from abroad was introduced.
Here, 'ввоза' is used in the genitive case following 'для' to indicate the purpose or necessity of the mentioned permission.
Для ввоза этой продукции требуется специальное разрешение.
Special permission is required for the import of this product.
In this example, 'ввоза' is a genitive attribute describing 'порядок', meaning the procedures or conditions related to imports.