Here are the internal rules governing emails blocked due to "The sending rate is not accurate of is too high" per NetSuite support: If more than 6 "same" emails within 10 minutes - matching the rules below - are tried to be sent, we will block all the following "same" emails. These will then be moved to the Undelivered…

Just as an FYI, if you use the setMandatory option on a select field, the selected value of ' ' does trigger a prompt to enter a value for that field. I was concerned that this solution would bypass that prompt. Values such as 0 and -1 do not trigger the prompt.

We experienced something similar yesterday in a sandbox account where "$" was replaced with "Rs." for one user and "€" for another. After a while of toying with the template and not making any progress, I rolled back the code to its original state and suddenly the problem disappeared. Sorry I can't offer an explanation.