Editable grid - currency fields - funny error message - You must enter a number between...

Hi Guys,

users got error message saying "you must enter a number between -922... and 922..." for currency fields on editable grids. It is not possible to change anything. If user opens the record, the value can be easily changed on the form.

Do you know what could be the case? We don't have any javascripts on these fields etc.

BR,

Miha