If you're updating your SAP environment, please note that there is new functionality in SAP Business One 10 client forms that require changes regarding B1 Validations.
The old Add / Update / Find / Ok -button on marketing documents has been changed to a multi-button:
If you had, for example, a Click-type trigger attached to the button, it will not work if you select a value from the multi-button drop-down.
Instead, you need to use the new "Item Pressed + Combobox Select" -option in order for the validation to work on all occasions.
Keywords: Validation not working SAP 10