Attached is the actual text box in question, the NOTE box, on the sales side (see below). Its current limit is 1024 chars.
This hardcoded string limit is surprising , since many of your customers Fullfill via Amazon, and Amazon batches can have a long list of end-customer Amazon ecommerce orders that in the aggregate surpass this 1024 char limit
Can you please consider expanding to 4,096 chars. ? This seems like a very straightforward request, which is extremely easy to implement and has the potential to improve the experience of all your Amazon customers.