Binding ip to mac, dhcp HPE Aruba?

Question

Computer networks

Greetings, the question is simple: there is a dhcp server on aruba 3810m, you need to bind ip to mac.
If I enter
dhcp-server pool PM static-bind ip 10.0.1.55 255.255.255.255 mac 0017c8-78f450

I get the answer: DHCP server should be disabled before changing the configuration.

Or am I entering the wrong command or what am I doing wrong?

Is it really necessary to make a binding first:
dhcp-server disable
make a change to
dhcp-server enable ?