Cannot store multiple Phials of Phantasia on a retainer.

Time:
Frequency:
World name:
Character name: N/A
NPC name: (Your retainer)
Monster name: N/A
Class/Level: N/A
Party or solo: N/A
In-game time: N/A
Area and coordinates: Summoning Bell
Steps:
1. Because Phials of Phantasia are unique, trying to store two or more on a retainer will fail. This can be circumvented by storing them on different retainers, but it is no less inconvenient for keeping retainer inventories organized.