What exact documentation is needed for MacBook firmware reset?

Hi An Ominous,

D.I. Johnson and Mac Jim ID have already given some good advice, but if your 15" MacBook Pro was specifically made in 2018, you can clear the firmware password yourself by restoring the T2 Security Chip firmware using another Mac. This completely erases your Mac and you'll have to reinstall macOS afterwards.

To check your Mac model, provide your serial number here: Check Your Service and Support Coverage - Apple Support

Before you start:

• Back up your Mac: Back up your Mac with Time Machine - Apple Support (CA)
• Disable Activation Lock: Activation Lock for Mac - Apple Support (CA)

To restore (not revive) the firmware: Revive or restore an Intel-based Mac using Apple Configurator - Apple Support (CA)

An order confirmation is just that... confirmation that an order for computers was placed.

A copy of an invoice to your former employer that lists the serial numbers of the specific machines that were delivered is actually what Apple is requiring. The company's purchasing department should have that.

In light of your post and to add to mine, the OP may also need a bill of sale or receipt from the company indicating transfer of ownership of the computer to them. Possibly.

I would also suspect that they would want to make sure the device is yours. Usually that is done with the original invoice that shows your name and the device serial number. That might be something your former employer may have to do, since it will be their name on the invoice. I don't know for sure, but the point of adding a firmware password is to protect the device from theft and somehow you are going to have to prove that you now own the device.

Let us know how it works out,