This article summarizes how to use and obtain Collaboration Exchange Certificates in Knives Out, as well as the differences from Universal Exchange Currency. Please make use of it.
Table of Contents
What are Collaboration Exchange Certificates?
Exchange for Collaboration-Exclusive Items

Collaboration Exchange Certificates can be used for exchanging for collaboration-exclusive items. They have no expiration date and can be used for a wide range of items, so collecting them allows you to exchange them for desired collaboration items later on.
How to Obtain Collaboration Exchange Certificates
Obtained When Pulling from Collaboration Gachas
You can obtain one certificate per pull from collaboration gachas that include them. Whether Collaboration Exchange Certificates are included varies by event, so if you want them, be sure to check the gacha overview beforehand.
How to Use Collaboration Exchange Certificates
Exchange in the Exchange Area

Collected Collaboration Exchange Certificates can be used in the Exchange Area. Tapping the exchange list button on the collaboration gacha screen will take you to the Exchange Area.
No Expiration Date
Since Collaboration Exchange Certificates are common items with no expiration date, you can also use certificates collected from past collaboration gachas in different collaboration events.
Not Usable in All Collaborations
Collaboration Exchange Certificates cannot be used in all collaboration events. Depending on the event, the certificates themselves may be neither usable nor obtainable.
Differences from Universal Exchange Currency
Usable in Different Events

Collaboration Exchange Certificate | Can be obtained and used in collaboration events such as the SAO collaboration. |
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Universal Exchange Currency | Can be obtained and used in original gachas such as Farewell My Concubine. |
Universal Exchange Currency can sometimes be obtained from gachas for original outfits, etc., that are not collaboration events, and can be used in the exchange shop for exclusive items.