Each item in Minecraft has a unique ID assigned to it, known as an item ID, this can be used in commands to spawn the item into the game. The item ID for lava bucket in Minecraft is shown below:
Items from earlier versions of Minecraft were assigned a numerical ID - a unique number to represent it.
The numerical ID for Lava Bucket is:
The Lava Bucket item can be spawned in Minecraft with the below command. Cheats must be enabled before this will work.
A lava bucket can be obtained by right clicking a bucket on a lava source. Lava buckets are useful for moving lava.