Maximum number of characters including spaces:
title — 33 characters, a single word cannot be more than 23 characters
ad text — 75 characters, a single word cannot be more than 22 characters
link — 1024 characters (including protocol)
display link — 20 characters (not including the domain)
The number of keywords per group cannot be more than 200.
The number of characters for one keyword (including negative keywords) cannot be more than 4096. The “-!” operator is considered one character.
The number of words in one keyword cannot be more than seven, excluding stop words.
A single list of negative keywords can contain up to 20,000 symbols, not counting spaces.
Every ad campaign can contain up to 1000 groups.
Each group can include up to 50 ads.
It is possible to place up to 3000 campaigns on one account, of which no more than 1000 can be active (active campaigns are considered to be all campaigns not located in the archive).
You can suspend ad impressions on specific content sites and in ad exchanges No more than 1000 entries can be added to the blocked list, which includes sites, apps, and ad exchange partner sites. You cannot opt out of your ads being served in Yandex and Mail.ru search products.