Oh right, you said so in the original post. I'm not sure why you'd get that error, but in any event you need to have a project page before you can post an announcement.
Edit: wait, blog post? As in, a devlog posted from your dashboard?
You mean in Release Announcements? Yes, you need to have a game or whatever first. That category is for announcing things you publish to itch.io, not elsewhere.
Okay I have looked into Project Page, But i think i need To upload game files to do it?
Please Note that, I am Working on the game and It's not that ready and playable as of now but i want to know if any people can give me feedback/ideas to implement, So i thought announcement post would be better?
NOTE: The Game Is Not Ready Yet To Have Playable Builds.So i think Creating Project section is not for me?
Release Announcements is for released games. See the Quality Guidelines FAQ for published game pages. Before you have one, the recommended way is to use the Posts tab on your dashboard.
No one reads unattached blog posts (from within Itch). Better create a project and make an attached devlog.
But if you are looking for feedback and such, there are other sections of the message board.
https://itch.io/board/255031/get-feedback
And if it is not project specific maybe https://itch.io/board/10019/general-development
Hey , Sorry if i am late , Do i need any build to make a project page? as my game is in the very early stage and not yet playable , and i want to see expression of some peoples and get some feedback you know but not like within only 1 post , i will be posting after i add something in game for example.
A game page with no files uploaded won't show up in searches and listings. Maybe you've noticed all the people complaining about similar problems. Please make sure your game page is ready before you publish. In the mean time you can follow redonihunter's advice. The forum is also where you can post links to your blog posts until you can attach them to a game page.
Do i need any build to make a project page?
No.
But if your project is listed or not, chances are, no one will give you feedback on your project page, nor on any blog post.
Look here https://itch.io/feed?filter=new_games
Things are posted by the minute.
Also here for devlogs/blogs.
https://itch.io/feed?filter=posts
Your stuff will drown in all the other stuff. And even if 100 people would download your project or look at your blog post, you still might get 0 feedback. You either need to get an audience by the 1000 or ask for feedback at places where people like to talk. Community, message boards, discord... But your own blog post / project page is about the last place you can expect feedback - if you are unknown. If you already have a following, things get different.
This is just a general observation. Maybe your project is interesting to some people and they happen to be talkative.
To give some further insight to what was written above:
You can create and publish your project without any downloadable/playable (if browser content) files, but unless you want to show it on your profile or make sure people can easily find it via its browser adress (as draft/restricted are a bit more "complicated" in that matter), you shouldn't do it. You can see it as a good way to make it "visible" at first, but as mentioned you will not be listed into the search results. Not only that but you basically "miss your chance" to appear in the recent category, especially if your publishing and possible indexing into the search results have a larger time gap between them. If you post a devlog for a project and categorize it (justifiably) into "Major update" you may get a push in "Recent". All that said, the general spirit here is that you should not rely on the recent tab and search results too much anyway, but it is still better than wasting it if you do not have the reasons I wrote about at the beginning.
Another thing I want to point out: Devlog Posts are not bound to the same rule you have set for your project if I remember correctly. For example, you can post a devlog for a draft/restricted project and set that devlog to published. It will appear in the devlog section of the website (not this discussion board), as well as in that specific recent tab. I would assume general blog posts you can create from Dashboard -> Posts (and not choosing a specific project you have created) will work the same way. So basically: You can create devlogs and show your progress to people, even without setting your entire project page to public. And when users are on a devlog of a project, clicking on a link that leads them to the actual project should work normally if I recall. So they can visit your website for what it already is from the devlog if they are interested.
All the above is meant as: Publishing -> Set to public when editing a project page / devlog. (Instead of choosing draft or restricted. If you just create a page, it is automatically set to draft at first. So creation is not necessarily publishing in that context.
About the discussion board: You can also share your progress about a project in the devlog section of this community. (It is basically the overall discussion board for itch.io). It was created before devlogs existed, but you can still see it as a way to share your progress directly with the people who visit this place. Mind that you should create and edit only one topic (per project I believe, make sure you read the rules that are openable above each category of this board).