I am currently integrating Zoho CRM (v7 API) with our system and I need clarification regarding the Taxes API and OAuth scopes.

Context:

We are creating Quotes via the API (/crm/v7/Quotes)

Each quote contains line items with taxes (e.g., TVA 19%, 10%, 0%)

We attempted to use the endpoint /crm/v7/taxes to:

Retrieve existing taxes

Create taxes dynamically if they do not exist

Issue:

All requests to /crm/v7/taxes return:

OAUTH_SCOPE_MISMATCH

We tried adding scopes like:

ZohoCRM.settings.tax.READ and ZohoCRM.settings.tax.CREATE

However, the OAuth authorization fails with:

"Invalid OAuth Scope – Scope does not exist"

Questions:

Is the /crm/v7/taxes endpoint publicly available for Zoho CRM API v7?

If yes, what are the correct OAuth scopes required to access it?

If not, what is the recommended way to:

Programmatically manage taxes

Attach taxes to Quote line items without manual configuration?

Goal:

We want to fully automate the sync of estimates (including taxes) without requiring manual tax creation in Zoho CRM.

Any guidance or documentation would be highly appreciated.