API changes Ionbiz V2.00

Questions
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1

How can I check the way in which the API client has been implemented? We need to be able to reauthorize the connection if a HTTP 401 Unauthorized status code is shown. However, I’m not sure where I would need to check and adjust this.

https://help.ionbiz.com/articles/#!ionbiz-settings/api-changes/q/api%2520v2/qid/21176/qp/1

2

It is unclear what the question is. What error do you run into?

3

Where can I check in the Invantive environment which API client has been implemented?

4

It remains unclear what the question is. Please elaborate on the error or provide sufficient context.