Error Message displayed is not meaningful
How to customize the error on Screen "Invalid value specified for PropertyName.Value doesnt adhere to the validate:ValidateRuleName"
ResolutionWhenever an input fails validation by an edit validate rule, the PropertyInfo-EditValidate rule is invoked. Customizing this, gives the same message, whenever an edit validate fails for all inputs. This is as per the product design.
As a workaround, one could simplify the error message within this message rule and add the required message via the edit validate rule itself, as mentioned in the below PDN article.