Can one registration stack promo codes

In GiveCampus Events, available controls depend on your permissions and the interface used by your institution.

The registration stores one promo code. Applying another valid code replaces that association rather than adding a second code to the same registration. Different registration records, including later/additional registrations, must be reviewed separately when someone appears to have used two codes. A promo-code usage limit counts registrations using that code; it is not a universal one-discount-per-person identity restriction. Ask support to inspect the actual records and pricing before asserting duplicate discounts or changing completed charges.