Traditional APIs to RESTful APIs (Auth'n'Auth and OAuth (new security))

[petsupplyandfood]

Hi,

I'm developing a system integrated with eBay; Traditional APIs have been working with Auth'n'Auth client authentication for a couple of years now.
A couple of months ago eBay disabled ApiAccessRules in Traditional APIs, this can now only be done through RESTful API RateLimits with OAuth client authentication (new security).
I had to develop new user authentication using OAuth (new security).
But two user authentications for one system are not exactly pretty.
I decided to switch to a RESTful API.
I'm currently converting programs from traditional APIs to RESTful APIs, but I keep running into various problems.
Can I use OAuth (new security) authentication for traditional APIs or Auth'n'Auth authentication for RESTful APIs?
Who knows?

Thanks.

[shipscript]

You can use OAuth in place of Auth-n-Auth in the Traditional APIs, but not the other way around.

[petsupplyandfood]

Thank you.
You gave me hope.
I'll go try it.

[developer_support@ebay]

Hi @petsupplyandfood 

You can use the OAuth access token to make requests to several of the traditional eBay APIs like Trading API and Post Order API.

For more details, please have look on  "Using OAuth with the eBay traditional APIs" here: https://developer.ebay.com/api-docs/static/oauth-trad-apis.html