Hello there @dbevandesigns, that means that your parameters for this call aren’t set as they should, in each place where you call Company Details, or another calls you have to put all the tokens from playground regarding the docs, now you have problems with the Company details, check does all these fields are defined, and are equals with data from the Quickbooks?
And does your Access token and other tokens are the same which returns playground.
As a conclusion, you made some errors while setting up these keys or ID, or Token.
I’m happy to help you with it, but you should define which one is wrong cause I don’t have access nor to your app, nor to your playground.
Thank you,
BR,
Nik.