Description: A validation message is a notification that indicates whether a specific validation rule has been met in a system. This type of message is fundamental in web application and software development, as it ensures that data entered by users meets certain criteria before being processed or stored. Validation messages can be positive, indicating that the data is correct, or negative, pointing out errors or inconsistencies. Their implementation is crucial for enhancing user experience, as they provide immediate feedback on the quality of the information entered. Additionally, they contribute to system security by preventing the entry of malicious or incorrect data, which could lead to application failures or security vulnerabilities. In various development environments and frameworks, validation messages are essential tools that help maintain data integrity and guide users in correctly interacting with applications.