# Validating component values

Validation of component values in Eximee Designer allows you to control the correctness of data entered in forms. Thanks to validations, we can make sure that all data sent to the system meets specific criteria (e.g. is complete and in the correct format), which prevents errors at later stages of the process. Eximee Designer allows attaching **standard validations** to form controls (components) – for example, a PESEL number validator, an identity card number validator, or a bank account number validator. **By default, validations are not active**, until they are configured, so the designer decides which fields require checking. Each validation is defined for a specific field – this allows an error message to be displayed directly next to that field if the conditions are not met.