Inventory API unauthorized

[trophy-service77]

I am trying to use the inventory API in order to add item to sell on my account on eBay. The issue is that I tried to generate a token to use the API on the DevZone : 

https://developer.ebay.com/DevZone/build-test/test-tool/default.aspx?index=0&api=inventory&call=offe...

But every apis call results in an unauthorized response : 

{
"errors": [
{
"errorId": 1001,
"domain": "OAuth",
"category": "REQUEST",
"message": "Invalid access token",
"longMessage": "Invalid access token. Check the value of the Authorization HTTP request header."
}
]
}

If anyone can explain me how to create valid access token ? I never found something clear enough and working enough. 

[ricl8461]

I understand your frustration. Generating a valid access token can sometimes be a bit tricky. Make sure you follow the authentication process step by step. You'll need to create an App on eBay Developer Program, get your credentials, and then exchange them for a token. Double-check that you're using the correct token in your API calls. If you're still facing issues, reaching out to eBay Developer Support might be helpful. They can guide you through the process and troubleshoot any problems you're encountering. Good luck!

[aolishenghardware]

Did you solve your problem? I had the same problem.