Date field validation in suitecrm 8.6

[Harshad]

Please check if this helps

Logic Operators

Or a custom date validator would help. Please refer this

Suitecrm V8 Fields Custom Validation

Thanks for the making me understand the example. I tried something similar to your field at my end in 8.8 version. You can change according to 8.7 to see if it helps. Sharing the steps here based on my learning. Copy config/services/ui/ui.yaml at extensions\defaultExt\config\services\ui\ui.yaml and add a new regex (siren). validations: regex: phone: "^([\\+]?|00)((([(]{0,1}\\s*[0-9]{1,4}\\s*[)]{0,1})\\s*)*|([\\-\\s\\./#x0-9])*)+$" email: '^(?:[\.\-\+&#!\$\*=\?\^_`\{\}~\…