Cross-Field Form Validation in Oracle JET

JET keeps evolving and in the latest version, its toolkit provides improved support for form cross-field validation. It is much easier to implement validation than it was before. I will show it in this example.
Example of the data entry form. Validation logic:

Link: https://dzone.com/articles/cross-field-form-validation-in-oracle-jet?utm_medium=feed&utm_source=feedpress.me&utm_campaign=Feed%3A+dzone%2Fwebdev