When you enchant an item using the /enchant command, the success message in the chat does not indicate which entity's item was enchanted and with which enchantment:
Current success message (16w06a)
Enchanting succeeded
MC-96929
enchant command missing indicator for affected entity and enchanting
Resolved
Fixed
5
(Unassigned)
Confirmed
/enchant, chat, command, message, success
Minecraft 16w06a, Minecraft 1.11.2, Minecraft 1.12 Pre-Release 5, Minecraft 1.12.2
Minecraft 18w06a
Retrieved
Confirmed