What do they mean by "Make sure to send enough to cover any coin transaction fees!"? When I paid a Bitcoin bill yesterday to Coinpayments.net (that's what they used), which had no problems, I spotted this text:

Make sure to send enough to cover any coin transaction fees!

What exactly do they mean by this?
I used their bitcoin: hyperlink in Bitcoin Core so I got the &quot;pay form&quot; filled in just as they wanted it, and again, I had zero problems. I just wonder what they could possibly be meaning by this? &quot;Send enough&quot;? Cover &quot;any coin transaction fees&quot;?
Perhaps they meant &quot;don't subtract fees from the amount&quot; That is, if you owe 0.1 BTC and you have 0.1 BTC in you wallet, you shouldn't pay.