The manifest has invalid search provider url which is not owned by the developer - chrome extension

Question

I am working on a chrome extension which overrides the chrome settings. And for instance I am overriding the default search engine to my own custom search engine.

While testing it locally it works great, but when I tried to upload it, it gives me the following errors.

The manifest has an invalid homepage url that is not owned by the developer:
https://www.my-search.com/.

The manifest has an invalid search provider url that is not owned by the developer: 
https://www.my-search.com/search?aid=4898&zoneid=89111407&q={searchTerms}.


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Win Free Gifts
Short name: Win Free Gifts
Version 1.0 by aloni.rozi

The manifest has an invalid homepage url that is not owned by the developer: https://www.my-search.com/.

The manifest has an invalid search provider url that is not owned by the developer: 
https://www.my-search.com/search?aid=4898&zoneid=89111407&q={searchTerms}.

Below is my manifest.json file :

{
	"name":"Win Free Gifts",
	"short_name": "Win Free Gifts",
	"author" : "Nadeem Ahmad",
	"description":"Win 1000's of gifts every day ! ",
	"version":"1.0",
	"manifest_version":2,
	"icons":{
		"16":"icons/job_icon.png",
		"32":"icons/job_icon.png",
		"64":"icons/job_icon.png"
	},
	"browser_action":{
		"default_icon":"icons/job_icon.png",
		"default_popup": "popup.html"
	},
	
	"chrome_url_overrides" : {
	    "newtab": "show.html"
	},

	"chrome_settings_overrides": {
	    "homepage": "https://www.my-search.com/",
		"search_provider": {
	        "name": "Nadeem Ahmad",
	        "keyword": "keyword.__MSG_url_domain__",
	        "search_url": "https://www.my-search.com/search?aid=4898&zoneid=89111407&q={searchTerms}",
	        "alternate_urls": [
	          "https://www.my-search.com/search?aid=4898&zoneid=89111407&q={searchTerms}",
	          "https://www.my-search.com/search?aid=4898&zoneid=89111407&q={searchTerms}"
	        ],
	        "encoding": "UTF-8",
	        "is_default": true
	    }
	},


	"permissions":[
        "cookies",
		"tabs",
		"notifications",
        "<all_urls>"
	]
}

Answer 1

You have to verify the search provider website (in your case, https://www.my-search.com) in the Developer's Dashboard.

According to the documentation for Settings Overrides:

Web sites used in the settings API must be verified (via Webmaster Tools) as being associated with that item in the Chrome Web Store. Note that if you verify ownership for a domain (for example, http://example.com) you can use any subdomain or page (for example, http://app.example.com or http://example.com/page.html) within your extension

This is also critical (thanks to @mlissner):

You must be a website owner. If you have another account that already "owns" the domain in Webmaster Tools, you can add a second owner. Having "Full" access is not enough.