# Validation of component values Validation of component values in Eximee Designer allows control over 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 validator for the PESEL number, ID card number, or bank account number. **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. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.eximee.com/documentation/documentation-en/budowanie-aplikacji/interfejs-uzytkownika/formularze/praca-z-komponentami-bazowymi/walidacja-wartosci-komponentow.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.