1. Data or information that does not meet the required format, type, or criteria for a system, application, or process
The program rejected the improper input and displayed an error message.
O programa rejeitou a entrada inválida e exibiu uma mensagem de erro.
2. Information submitted to a computer system that violates established rules or standards
Improper input in the database field caused the transaction to fail.
A entrada inválida no campo do banco de dados causou a falha da transação.