Amazon SP API Integration ERPNext version 15

ERPNext
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1

I am trying to connect Amazon SP API with ERPNext Version 15
Is there a a documentation of where i can find all the required credentials?

2

Please check the documentation but no idea if it worked in v15 or not.

3

Thanks
Enter the IAM ARN, Refresh Token, Client ID, Client Secret, AWS Access Key, AWS Secret Key and Country.

this is what the documentation says and I have added them but the sync order button makes no change to the Sales Order count nor are my new products syncing

Wanted to get a better understanding about this

Thanks in advance