Snapchat API Error E3003 — Forbidden: Insufficient Permissions
Snapchat Marketing API error E3003 means the token has valid credentials but lacks permission for the requested operation. Learn how to request the correct OAuth scopes.
Snapchat Marketing API error E3003 means the OAuth token is valid but the app lacks permission for the requested resource. Fix: ensure you requested the correct OAuth scopes (snapchat-marketing-api, ads.read, ads.write) during authorization, or re-run the OAuth flow requesting the missing scopes.
Last reviewed 2026-06-06 · Official source
What Causes Snapchat Error E3003?
Snapchat's Marketing API requires specific OAuth scopes for different operations. An ads.read scope is sufficient for reading campaign data, but ads.write is required for creating or modifying ads. If the user authorized the app without a required scope, all write operations return E3003.
- 1App requested only ads.read scope but attempted a write operation
- 2User authorized app before write permissions were added to the app
- 3OAuth flow did not include the required scope in the authorization request
How to Fix Snapchat Error E3003
- 1Check the required scopes for the endpoint in Snapchat's Marketing API documentation.
- 2Update your OAuth authorization URL to include all required scopes: snapchat-marketing-api ads.read ads.write.
- 3Re-run the OAuth authorization flow — the user must re-authorize with the new scopes.
- 4Verify the new token includes the required scopes by calling the token introspection endpoint.
Official Snapchat Documentation
https://marketingapi.snapchat.com/docs/#authentication
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Other Snapchat API Errors
Unauthorized: Invalid Credentials
Snapchat Marketing API error E3002 means your OAuth token is invalid or expired. Learn how to re-authenticate and generate a valid Snapchat access token.
Invalid Parameter
Snapchat Marketing API error E4002 means a parameter in your request is invalid. Learn how to debug and fix malformed Snapchat API requests.
Unauthorized: Access Token Expired
Snapchat Marketing API 401 means your access token has expired (valid for 60 minutes). Learn how to refresh tokens automatically and never lose live campaign access.
Too Many Requests (Rate Limit)
Snapchat Marketing API 429 means you have exceeded the rate limit. Learn how to implement exponential backoff and request throttling to stay within Snapchat limits.