Using two different lists as a column constraint

[Dan_Oliphant]

Is it possible to use two different lists as column constraints at the same time?

[Steve]

Sure! The process depends on what you're trying to accomplish. Please provide more details.

[Dan_Oliphant]

So I have two sets of data...  [Related billingqandas][fullDATA] and billinginfo[dropdown_billing].

I would like to be able to use both as either suggested values or Valid If statements for an Enum List column in my form.  

[Steve]

Combine lists - AppSheet Help