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HTTP 403 / CSRF

CSRF token validation failed

A modifying OData request (POST, PUT, PATCH, or DELETE) returns HTTP 403 because CSRF token validation fails.

Likely root causes

  1. The client did not fetch and resend a valid X-CSRF-Token.
  2. The token was fetched in one HTTP session but the modifying request did not reuse the corresponding cookies/session.
  3. A stale token is being reused after the server session changed.

What to inspect

  1. Fetch request headers — use X-CSRF-Token: Fetch.
  2. Fetch response — verify a token is returned and retain the session cookies.
  3. Modifying request — verify the same session/cookies and returned token are sent.
  4. /IWFND/ERROR_LOG for the exact backend/Gateway error.

Resolution path

  1. Fetch a fresh CSRF token from the same service/session before the modifying request.
  2. Persist and resend the related cookies together with the token.
  3. Do not hard-code or cache a CSRF token across unrelated sessions.
  4. Retest the full fetch-then-modify sequence in one session.

ERPClimb is an independent platform and is not affiliated with SAP SE.