Zabbix 4.0.19 API method task.create doesn't work

[v.jekimov]

Hi. When I send request like

{
"jsonrpc": "2.0",
"method": "task.create",
"params": {
"type": "6",
"itemids": "28798"
},
"auth": "f12140b2fca7b3621d8ec4cb87bb1d21",
"id": 1
}

I received back answer with message "Your browser sent a request that this server could not understand."

What I did wrong? Request have mistakes? Or it's another zabbix bug?
Any suggestions?

[tim.mooney]

What is itemid 28798? What type of item is it?

[v.jekimov]

What is itemid 28798? What type of item is it?

Type is Zabbix agent. But I also tried different type, the result was the same.

[v.jekimov]

It was not my day. My curl request had a stupid mistake. Everything works. Thanks.

[tim.mooney]

Just for my reference and for the possible help of others that might run into a similar issue, can you give a little information on what you were doing wrong with curl?