Iterator Output into Google Sheets Issue

I have a workflow that is doing 2 HTTP get requests. The first one is working and puts data on Google Sheets and Smartsuite cell A1. The second request is a list of data. I have an iterator that splits it into 50 bundles but I only need between 20-30 bundles. Then I take the output from that (balances) and get a Google Sheet error when I try and put the data there.
BundleValidationError
Validation failed for 1 parameter(s).

Doesn’t work in Smartsuite either.
When it does pass back to Telegram bot it gives this error.
Invalid collection in parameter ‘rows’.
RuntimeError
[429] Too Many Requests: retry after 30
How do I limit the bundles output to 30 on the iterator?
How do I get the data into Google Sheets and Smartsuite for processing?