Text length limit in Odnoklassniki media topic api?

Question

Classmates

Is there a text length limit for the mediatopic.post method?
I'm trying to send a text to a group about 7 thousand characters long, I get nothing in response, not even an error number, the topic is not published.
Is it because of the text length limit?
Then how many characters maximum is allowed?
Although I tried to publish the same topic manually, everything is published, there are no restrictions ...

Answer 1

How do you publish?
Data transmitted via GET cannot be too large... In case of REST, try via POST