There are maximum item limits for each item type.
Items will not go to inventory if this limit is exceeded.
What happens will depend on the item type.
[Action Taken When Exceeding the Limit]
Training Items: Discarded
Job Requests: Oldest ones discarded to make room for new ones
Equipment: Excess items will be acquired, but you won't be able to start certain battles, like stories or PvP
Medals: Sent to Gift Box
Summon Tickets: Sent to Gift Box
Costumes: Converted to Zeni
Accessories: Converted to Zeni
Skip Tickets: Sent to Gift Box
EN Tanks: Sent to Gift Box
Slot Removers: Sent to Gift Box
Multi-Z Power: Sent to Gift Box
Dragon Balls: Converted to Zeni
Event Keys: Discarded
*As an exception, excess Zeni, Souls, Training Items, Memories, and Fragments acquired at the Shop will be sent to the Gift Box.