Hi Susan. Thanks for the advice. May have to use a disclaimer if I can't find a fix. I read that to solve the problem, you must replace the default values with Set a Fields Value action rules. So in our case we have a default value for uniqueId in the repeating table:
concat(now(), userName(), count(preceding-sibling::Items))
I was only able to enter 14 items before receiving an error. I unchecked Refresh value when formula is recalculated and I can get up to 24 items before an error. So I believe this field is what's causing the problem