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Google Ads API / LAST REVIEWED 8 AUG 2026

Google Ads API RequestError: INVALID_CUSTOMER_ID

  1. 1

    Use the ten-digit Google Ads customer ID without hyphens or spaces.

  2. 2

    Confirm the path customer and login-customer-id represent the intended client and manager accounts.

  3. 3

    Run a customer-client query from the manager to verify the relationship.

WHAT THE ERROR MEANS

A malformed or incorrect customer ID is being used in the request path or header.

INVALID_CUSTOMER_ID indicates the customer ID format or value in the request is not valid.

PRIMARY DOCUMENTATION

Platform APIs and policy systems change. Confirm the current requirements in the official documentation before modifying a production integration.

Google Ads API error handling
STILL BLOCKED?

Bring the exact response, request ID and timeline.

Ads Villa can review tracking, account structure and the implementation path. We cannot bypass platform security or policy enforcement.

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