One credential set pulls spend from BOTH accounts (SRI + Shopper Advocate).
What to ask your manager for:
- Developer Token — from ads.google.com/aw/apicenter (the manager/MCC account). Must be approved for Basic Access, not Test Account.
- OAuth Client ID + Secret — from Google Cloud Console with the adwords scope enabled.
- Refresh Token — generated via OAuth Playground for an account with access to both Google Ads accounts.
- Login Customer ID — only if accounts sit under an MCC manager. 10 digits, no dashes.
- SRI Customer ID + Shopper Advocate Customer ID — 10 digits each, no dashes. Visible top-right of each Google Ads account.