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Core contract

Error Codes

System map · Predictable recovery
API request
Error contract
Safe recovery

Common API error responses.

StatusCodeMeaning
401permission_deniedInvalid or missing Authorization header.
400invalid_parametersRequest body does not match schema.
404not_foundResource (Menu, Customer, Product) not found.
400invalid_order_payloadSpecific logic error during order validation (e.g., product out of stock).