Setting up OAuth 2.0 - What does this error mean: Invalid_grant

This article is part of the article serie Setting up OAuth 2.0 - Introduction

When acquiring the access token the following error is shown:
"error": "invalid_grant"



This error is shown when the authorization code in the soap body is not or no longer valid.

Solution:
The solution is to connect with Twinfield again to receive a new authorization code. Use this new code in the soap body and with this you can then receive a new access token.