airdrop message not enough space when it is clear there is plenty

Hi Douglas1952,

Thanks for posting here in Apple Support Communities. Are you getting this error with any file you attempt to send or is it only one file in particular? Are both of your devices updated? See: How to use AirDrop on your iPhone, iPad, or iPod touch - Apple Support

"How to use AirDrop

Follow the steps for your device.

On your iPhone 11 or later

1. Open an app, then tap Share or the Share button . If you share a photo from the Photos app, you can swipe left or right and select multiple photos.
2. Tap the AirDrop button.
3. If the person that you want to share with also has an iPhone 11 or later model, point your iPhone in the direction of the other iPhone.
4. Tap the profile picture of its user at the top of the screen. Or you can use AirDrop between your own Apple devices. If you see a red numbered badge on the AirDrop button, there are multiple devices nearby that you can share with. Tap the AirDrop button, then tap the user that you want to share with. Learn what to do if you don't see the AirDrop user or your other device."

Kind regards.