I’m using several data tables with a various row structs. I have a UActorComponent sub-class that has UPROPERTY UDataTable* member variables for each of the different tables.
One annoyance is that when picking the data table assets for each UPROPERTY, all of the data tables show up in the picker, even then my code requires tables with a specific row structure.
Is there a way to restrict which data tables show up in the picker, so that only data tables with compatible row structs are listed?
Yes, using RequiredAssetDataTags with RowStructure. For an example, see URichTextBlock’s implementation in RichTextBlock.h.
UPROPERTY(EditAnywhere, Category=Appearance, meta=(RequiredAssetDataTags = "RowStructure=RichTextStyleRow"))
class UDataTable* TextStyleSet;
wow, good on you to come back and give yourself the answer 2 years later 
It’s because I forgot and found my same question 2 years later 
As I can’t find any documentation about this, do you have any idea how you would be able to restrict FDataTableRowHandle to tables with certain structs in the same way? (if possible?)
For me, to restrict FDataTableRowHandle to a certain struct, meta=(RowType="MyStruct"), worked fine