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Sometimes, technology just doesn't want to cooperate. If you’re staring at an error message, check these three things: lexoffice.login
lexoffice is a leading cloud accounting software for small and medium-sized enterprises (SMEs) in Germany. Its API (documented at https://developers.lexoffice.io ) enables automated invoice creation, contact management, and financial reporting. All API endpoints require authenticated access, governed by the lexoffice.login process. : lexoffice requires cookies to maintain your session;
: Navigate to the official website at app.lexoffice.de. via a malicious browser extension)
PKCE ensures that even if the authorization code is intercepted (e.g., via a malicious browser extension), the attacker cannot exchange it without the original code_verifier . lexoffice correctly enforces S256 (SHA‑256) method, rejecting plain code_challenge .