Returns True if the field's validity was changed by the current group of SetFieldValue calls.
This method tells you whether the validity of the field changed. In some cases, the validity can change even if this field's value did not. For example, its validity might be dependent upon another field's value.
The grouping mechanism detects BeginNewFieldUpdateGroup and SetFieldValue calls only for the Entity object to which this field belongs. It ignores calls that apply to other Entity objects.
You can instead use the ValidityChangedThisSetValue method if you only care about the most recent SetFieldValue call.
VBScript
fieldInfo.ValidityChangedThisGroup
Perl
$fieldInfo->ValidityChangedThisGroup();