What is the threshold for reporting corporate distributions on Form 1042-S?

A withholding agent must complete a separate Form 1042-S for each of which of the following?

In the Chapter 3 Exemption Code Box, if there is no exemption available, what code with the withholding agent enter and what amount should reflect as the chapter 3 withholding rate?

For purposes of Form 1042-S reporting, what does a withholding agent enter in a Country Code Box if the IRS has not assigned that country a code?

Assume a withholding agent makes a chapter 4 withhold able payment of U.S. source dividends to a QI that does not assume primary chapter 3 and chapter 4 withholding responsibility and is a participating FFI. The QI provides a reliable Form W-8IMY along with an associated withholding statement that allocates:

95 percent of the payment to a chapter 3 withholding rate pool with a single chapter 4 exemption code, and

5 percent of the payment to a chapter 4, 30 percent withholding rate pool of recalcitrant account holders.

How many Forms 1042-S does the withholding agent need to issue to the QI?