What an identity holds, and how to move it. Credits pay for names, documents and contracts — an identity that runs out simply stops.
Credits have to come from somewhere. The funding key's ordinary Dash address can be paid from any wallet — send DASH there, then convert it here with an asset lock. Minimum 0.002 DASH, and it takes a few minutes: a block has to pass and be chain-locked.
A conversion that was interrupted leaves the coins on the chain, waiting. Your key is enough to find them back.
The address keeps a little back for the transition fee. Leave the amount empty to move everything it holds.
Signed with the identity's TRANSFER key — the only one allowed to move credits out. There is no identity-to-identity transfer: the other side tops itself up from the address you send to.
Moves the whole balance except a small margin, which stays behind to pay the fee. The destination has to be a different address.