Why Google Sheets Pipelines Break at the Sharing Step — and How to Fix It

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Google Sheets often functions as an unofficial database across company departments, but syncing it to a data warehouse consistently fails at one overlooked step. To connect Sheets to a warehouse via a tool like Datanika, users must create a Google Cloud service account with no IAM roles and download its JSON key. The critical step is manually sharing each individual spreadsheet with the service account's email address, just as one would share it with a colleague, since folder-level permissions do not apply. When testing the connection, the tool intentionally returns a neutral status rather than a green tick, because credential validity and per-spreadsheet sharing permissions are checked separately. Skipping the explicit share step or expecting a successful connection test to confirm full access are the two most common points of failure in this workflow.

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